Home / 5,490.71-7,580.68-3,605.64

Finding the Fourth Proportional to 5,490.71, 7,580.68 and 3,605.64

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Solution

The fourth proportional to 5,490.71, 7,580.68 and 3,605.64 is: 4,978.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,490.71 : 7,580.68 = 3,605.64 : x
  2. Step 2: Convert to fraction form
    5,490.71/7,580.68 = 3,605.64/x
  3. Step 3: Cross multiply
    5,490.71x = 7,580.68 × 3,605.64
  4. Step 4: Simplify right side
    5,490.71x = 27,333,203.04
  5. Step 5: Solve for x
    x = 27,333,203.04/5,490.71
  6. Step 6: Final answer
    x = 4,978.08

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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.