Home / 7,647.73-10,557.58-5,128.92

Finding the Fourth Proportional to 7,647.73, 10,557.58 and 5,128.92

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Solution

The fourth proportional to 7,647.73, 10,557.58 and 5,128.92 is: 7,080.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,647.73 : 10,557.58 = 5,128.92 : x
  2. Step 2: Convert to fraction form
    7,647.73/10,557.58 = 5,128.92/x
  3. Step 3: Cross multiply
    7,647.73x = 10,557.58 × 5,128.92
  4. Step 4: Simplify right side
    7,647.73x = 54,148,957.57
  5. Step 5: Solve for x
    x = 54,148,957.57/7,647.73
  6. Step 6: Final answer
    x = 7,080.40

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Half scale
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Double scale
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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.