Home / 8,915.06-12,302.69-5,136.85

Finding the Fourth Proportional to 8,915.06, 12,302.69 and 5,136.85

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Solution

The fourth proportional to 8,915.06, 12,302.69 and 5,136.85 is: 7,088.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,915.06 : 12,302.69 = 5,136.85 : x
  2. Step 2: Convert to fraction form
    8,915.06/12,302.69 = 5,136.85/x
  3. Step 3: Cross multiply
    8,915.06x = 12,302.69 × 5,136.85
  4. Step 4: Simplify right side
    8,915.06x = 63,197,062.82
  5. Step 5: Solve for x
    x = 63,197,062.82/8,915.06
  6. Step 6: Final answer
    x = 7,088.80

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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.