Home / 8,915.15-12,299.03-5,376.39

Finding the Fourth Proportional to 8,915.15, 12,299.03 and 5,376.39

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Solution

The fourth proportional to 8,915.15, 12,299.03 and 5,376.39 is: 7,417.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,915.15 : 12,299.03 = 5,376.39 : x
  2. Step 2: Convert to fraction form
    8,915.15/12,299.03 = 5,376.39/x
  3. Step 3: Cross multiply
    8,915.15x = 12,299.03 × 5,376.39
  4. Step 4: Simplify right side
    8,915.15x = 66,124,355.02
  5. Step 5: Solve for x
    x = 66,124,355.02/8,915.15
  6. Step 6: Final answer
    x = 7,417.08

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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.