Home / 8,568.40-12,860.70-7,337.20

Finding the Fourth Proportional to 8,568.40, 12,860.70 and 7,337.20

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Solution

The fourth proportional to 8,568.40, 12,860.70 and 7,337.20 is: 11,012.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,568.40 : 12,860.70 = 7,337.20 : x
  2. Step 2: Convert to fraction form
    8,568.40/12,860.70 = 7,337.20/x
  3. Step 3: Cross multiply
    8,568.40x = 12,860.70 × 7,337.20
  4. Step 4: Simplify right side
    8,568.40x = 94,361,528.04
  5. Step 5: Solve for x
    x = 94,361,528.04/8,568.40
  6. Step 6: Final answer
    x = 11,012.74

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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.