Home / 4,753.17-7,128.95-1,290.42

Finding the Fourth Proportional to 4,753.17, 7,128.95 and 1,290.42

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Solution

The fourth proportional to 4,753.17, 7,128.95 and 1,290.42 is: 1,935.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,753.17 : 7,128.95 = 1,290.42 : x
  2. Step 2: Convert to fraction form
    4,753.17/7,128.95 = 1,290.42/x
  3. Step 3: Cross multiply
    4,753.17x = 7,128.95 × 1,290.42
  4. Step 4: Simplify right side
    4,753.17x = 9,199,333.21
  5. Step 5: Solve for x
    x = 9,199,333.21/4,753.17
  6. Step 6: Final answer
    x = 1,935.41

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.