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Finding the Fourth Proportional to 5,112.71, 7,623.02 and 4,985.13

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Solution

The fourth proportional to 5,112.71, 7,623.02 and 4,985.13 is: 7,432.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,112.71 : 7,623.02 = 4,985.13 : x
  2. Step 2: Convert to fraction form
    5,112.71/7,623.02 = 4,985.13/x
  3. Step 3: Cross multiply
    5,112.71x = 7,623.02 × 4,985.13
  4. Step 4: Simplify right side
    5,112.71x = 38,001,720.77
  5. Step 5: Solve for x
    x = 38,001,720.77/5,112.71
  6. Step 6: Final answer
    x = 7,432.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.