Home / 7,521.38-10,379.63-4,118.68

Finding the Fourth Proportional to 7,521.38, 10,379.63 and 4,118.68

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Solution

The fourth proportional to 7,521.38, 10,379.63 and 4,118.68 is: 5,683.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,521.38 : 10,379.63 = 4,118.68 : x
  2. Step 2: Convert to fraction form
    7,521.38/10,379.63 = 4,118.68/x
  3. Step 3: Cross multiply
    7,521.38x = 10,379.63 × 4,118.68
  4. Step 4: Simplify right side
    7,521.38x = 42,750,374.49
  5. Step 5: Solve for x
    x = 42,750,374.49/7,521.38
  6. Step 6: Final answer
    x = 5,683.85

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Half scale
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Double scale
Find fourth proportional to 7,522.38, 10,381.01 and 4,119.68
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.