Home / 8,568.30-12,852.45-5,287.80

Finding the Fourth Proportional to 8,568.30, 12,852.45 and 5,287.80

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Solution

The fourth proportional to 8,568.30, 12,852.45 and 5,287.80 is: 7,931.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,568.30 : 12,852.45 = 5,287.80 : x
  2. Step 2: Convert to fraction form
    8,568.30/12,852.45 = 5,287.80/x
  3. Step 3: Cross multiply
    8,568.30x = 12,852.45 × 5,287.80
  4. Step 4: Simplify right side
    8,568.30x = 67,961,185.11
  5. Step 5: Solve for x
    x = 67,961,185.11/8,568.30
  6. Step 6: Final answer
    x = 7,931.70

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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.