Home / 5,140.38-7,710.58-1,244.80

Finding the Fourth Proportional to 5,140.38, 7,710.58 and 1,244.80

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Solution

The fourth proportional to 5,140.38, 7,710.58 and 1,244.80 is: 1,867.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,140.38 : 7,710.58 = 1,244.80 : x
  2. Step 2: Convert to fraction form
    5,140.38/7,710.58 = 1,244.80/x
  3. Step 3: Cross multiply
    5,140.38x = 7,710.58 × 1,244.80
  4. Step 4: Simplify right side
    5,140.38x = 9,598,129.98
  5. Step 5: Solve for x
    x = 9,598,129.98/5,140.38
  6. Step 6: Final answer
    x = 1,867.20

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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.