Home / 7,521.57-10,380.15-4,164.75

Finding the Fourth Proportional to 7,521.57, 10,380.15 and 4,164.75

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Solution

The fourth proportional to 7,521.57, 10,380.15 and 4,164.75 is: 5,747.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,521.57 : 10,380.15 = 4,164.75 : x
  2. Step 2: Convert to fraction form
    7,521.57/10,380.15 = 4,164.75/x
  3. Step 3: Cross multiply
    7,521.57x = 10,380.15 × 4,164.75
  4. Step 4: Simplify right side
    7,521.57x = 43,230,719.30
  5. Step 5: Solve for x
    x = 43,230,719.30/7,521.57
  6. Step 6: Final answer
    x = 5,747.57

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Half scale
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Double scale
Find fourth proportional to 7,522.57, 10,381.53 and 4,165.75
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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.