Home / 9,331.02-12,876.84-5,139.30

Finding the Fourth Proportional to 9,331.02, 12,876.84 and 5,139.30

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Solution

The fourth proportional to 9,331.02, 12,876.84 and 5,139.30 is: 7,092.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,331.02 : 12,876.84 = 5,139.30 : x
  2. Step 2: Convert to fraction form
    9,331.02/12,876.84 = 5,139.30/x
  3. Step 3: Cross multiply
    9,331.02x = 12,876.84 × 5,139.30
  4. Step 4: Simplify right side
    9,331.02x = 66,177,943.81
  5. Step 5: Solve for x
    x = 66,177,943.81/9,331.02
  6. Step 6: Final answer
    x = 7,092.25

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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.