Home / 1,277.50-1,917.15-508.18

Finding the Fourth Proportional to 1,277.50, 1,917.15 and 508.18

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Solution

The fourth proportional to 1,277.50, 1,917.15 and 508.18 is: 762.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277.50 : 1,917.15 = 508.18 : x
  2. Step 2: Convert to fraction form
    1,277.50/1,917.15 = 508.18/x
  3. Step 3: Cross multiply
    1,277.50x = 1,917.15 × 508.18
  4. Step 4: Simplify right side
    1,277.50x = 974,257.29
  5. Step 5: Solve for x
    x = 974,257.29/1,277.50
  6. Step 6: Final answer
    x = 762.63

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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.