Home / 1,575.60-2,174.85-913.12

Finding the Fourth Proportional to 1,575.60, 2,174.85 and 913.12

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Solution

The fourth proportional to 1,575.60, 2,174.85 and 913.12 is: 1,260.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,575.60 : 2,174.85 = 913.12 : x
  2. Step 2: Convert to fraction form
    1,575.60/2,174.85 = 913.12/x
  3. Step 3: Cross multiply
    1,575.60x = 2,174.85 × 913.12
  4. Step 4: Simplify right side
    1,575.60x = 1,985,905.83
  5. Step 5: Solve for x
    x = 1,985,905.83/1,575.60
  6. Step 6: Final answer
    x = 1,260.41

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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.