Home / 8,915.40-13,381.32-4,536

Finding the Fourth Proportional to 8,915.40, 13,381.32 and 4,536

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Solution

The fourth proportional to 8,915.40, 13,381.32 and 4,536 is: 6,808.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,915.40 : 13,381.32 = 4,536 : x
  2. Step 2: Convert to fraction form
    8,915.40/13,381.32 = 4,536/x
  3. Step 3: Cross multiply
    8,915.40x = 13,381.32 × 4,536
  4. Step 4: Simplify right side
    8,915.40x = 60,697,667.52
  5. Step 5: Solve for x
    x = 60,697,667.52/8,915.40
  6. Step 6: Final answer
    x = 6,808.18

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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.