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Finding the Fourth Proportional to 7,053.68, 9,719.88 and 5,272.40

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Solution

The fourth proportional to 7,053.68, 9,719.88 and 5,272.40 is: 7,265.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,053.68 : 9,719.88 = 5,272.40 : x
  2. Step 2: Convert to fraction form
    7,053.68/9,719.88 = 5,272.40/x
  3. Step 3: Cross multiply
    7,053.68x = 9,719.88 × 5,272.40
  4. Step 4: Simplify right side
    7,053.68x = 51,247,095.31
  5. Step 5: Solve for x
    x = 51,247,095.31/7,053.68
  6. Step 6: Final answer
    x = 7,265.30

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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.