Home / 2,585.18-3,877.70-637.40

Finding the Fourth Proportional to 2,585.18, 3,877.70 and 637.40

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Solution

The fourth proportional to 2,585.18, 3,877.70 and 637.40 is: 956.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,585.18 : 3,877.70 = 637.40 : x
  2. Step 2: Convert to fraction form
    2,585.18/3,877.70 = 637.40/x
  3. Step 3: Cross multiply
    2,585.18x = 3,877.70 × 637.40
  4. Step 4: Simplify right side
    2,585.18x = 2,471,645.98
  5. Step 5: Solve for x
    x = 2,471,645.98/2,585.18
  6. Step 6: Final answer
    x = 956.08

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1.5x scale

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.