Home / 5,490.84-7,574.64-3,897.48

Finding the Fourth Proportional to 5,490.84, 7,574.64 and 3,897.48

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Solution

The fourth proportional to 5,490.84, 7,574.64 and 3,897.48 is: 5,376.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,490.84 : 7,574.64 = 3,897.48 : x
  2. Step 2: Convert to fraction form
    5,490.84/7,574.64 = 3,897.48/x
  3. Step 3: Cross multiply
    5,490.84x = 7,574.64 × 3,897.48
  4. Step 4: Simplify right side
    5,490.84x = 29,522,007.91
  5. Step 5: Solve for x
    x = 29,522,007.91/5,490.84
  6. Step 6: Final answer
    x = 5,376.59

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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.