Home / 1,670.31-2,505.95-500.40

Finding the Fourth Proportional to 1,670.31, 2,505.95 and 500.40

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Solution

The fourth proportional to 1,670.31, 2,505.95 and 500.40 is: 750.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,670.31 : 2,505.95 = 500.40 : x
  2. Step 2: Convert to fraction form
    1,670.31/2,505.95 = 500.40/x
  3. Step 3: Cross multiply
    1,670.31x = 2,505.95 × 500.40
  4. Step 4: Simplify right side
    1,670.31x = 1,253,974.88
  5. Step 5: Solve for x
    x = 1,253,974.88/1,670.31
  6. Step 6: Final answer
    x = 750.74

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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.