Home / 8,787.49-12,126.71-4,808.57

Finding the Fourth Proportional to 8,787.49, 12,126.71 and 4,808.57

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Solution

The fourth proportional to 8,787.49, 12,126.71 and 4,808.57 is: 6,635.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,787.49 : 12,126.71 = 4,808.57 : x
  2. Step 2: Convert to fraction form
    8,787.49/12,126.71 = 4,808.57/x
  3. Step 3: Cross multiply
    8,787.49x = 12,126.71 × 4,808.57
  4. Step 4: Simplify right side
    8,787.49x = 58,312,085.29
  5. Step 5: Solve for x
    x = 58,312,085.29/8,787.49
  6. Step 6: Final answer
    x = 6,635.81

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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.