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Finding the Fourth Proportional to 7,959.81, 10,998.63 and 5,729.07

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Solution

The fourth proportional to 7,959.81, 10,998.63 and 5,729.07 is: 7,916.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,959.81 : 10,998.63 = 5,729.07 : x
  2. Step 2: Convert to fraction form
    7,959.81/10,998.63 = 5,729.07/x
  3. Step 3: Cross multiply
    7,959.81x = 10,998.63 × 5,729.07
  4. Step 4: Simplify right side
    7,959.81x = 63,011,921.17
  5. Step 5: Solve for x
    x = 63,011,921.17/7,959.81
  6. Step 6: Final answer
    x = 7,916.26

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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.