Home / 4,989.85-7,484.75-1,291.76

Finding the Fourth Proportional to 4,989.85, 7,484.75 and 1,291.76

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Solution

The fourth proportional to 4,989.85, 7,484.75 and 1,291.76 is: 1,937.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,989.85 : 7,484.75 = 1,291.76 : x
  2. Step 2: Convert to fraction form
    4,989.85/7,484.75 = 1,291.76/x
  3. Step 3: Cross multiply
    4,989.85x = 7,484.75 × 1,291.76
  4. Step 4: Simplify right side
    4,989.85x = 9,668,494.20
  5. Step 5: Solve for x
    x = 9,668,494.20/4,989.85
  6. Step 6: Final answer
    x = 1,937.63

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.