Home / 5,490.38-7,574.85-3,130.82

Finding the Fourth Proportional to 5,490.38, 7,574.85 and 3,130.82

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Solution

The fourth proportional to 5,490.38, 7,574.85 and 3,130.82 is: 4,319.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,490.38 : 7,574.85 = 3,130.82 : x
  2. Step 2: Convert to fraction form
    5,490.38/7,574.85 = 3,130.82/x
  3. Step 3: Cross multiply
    5,490.38x = 7,574.85 × 3,130.82
  4. Step 4: Simplify right side
    5,490.38x = 23,715,491.88
  5. Step 5: Solve for x
    x = 23,715,491.88/5,490.38
  6. Step 6: Final answer
    x = 4,319.46

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Half 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.