Home / 1,677.44-2,314.85-931.40

Finding the Fourth Proportional to 1,677.44, 2,314.85 and 931.40

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Solution

The fourth proportional to 1,677.44, 2,314.85 and 931.40 is: 1,285.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,677.44 : 2,314.85 = 931.40 : x
  2. Step 2: Convert to fraction form
    1,677.44/2,314.85 = 931.40/x
  3. Step 3: Cross multiply
    1,677.44x = 2,314.85 × 931.40
  4. Step 4: Simplify right side
    1,677.44x = 2,156,043.74
  5. Step 5: Solve for x
    x = 2,156,043.74/1,677.44
  6. Step 6: Final answer
    x = 1,285.32

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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.