Home / 1,677.52-2,314.87-931.48

Finding the Fourth Proportional to 1,677.52, 2,314.87 and 931.48

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Solution

The fourth proportional to 1,677.52, 2,314.87 and 931.48 is: 1,285.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,677.52 : 2,314.87 = 931.48 : x
  2. Step 2: Convert to fraction form
    1,677.52/2,314.87 = 931.48/x
  3. Step 3: Cross multiply
    1,677.52x = 2,314.87 × 931.48
  4. Step 4: Simplify right side
    1,677.52x = 2,156,246.99
  5. Step 5: Solve for x
    x = 2,156,246.99/1,677.52
  6. Step 6: Final answer
    x = 1,285.38

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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.