Home / 7,748.89-11,541.31-7,711.13

Finding the Fourth Proportional to 7,748.89, 11,541.31 and 7,711.13

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Solution

The fourth proportional to 7,748.89, 11,541.31 and 7,711.13 is: 11,485.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,748.89 : 11,541.31 = 7,711.13 : x
  2. Step 2: Convert to fraction form
    7,748.89/11,541.31 = 7,711.13/x
  3. Step 3: Cross multiply
    7,748.89x = 11,541.31 × 7,711.13
  4. Step 4: Simplify right side
    7,748.89x = 88,996,541.78
  5. Step 5: Solve for x
    x = 88,996,541.78/7,748.89
  6. Step 6: Final answer
    x = 11,485.07

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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.