Home / 8,574.12-12,860.10-3,380.40

Finding the Fourth Proportional to 8,574.12, 12,860.10 and 3,380.40

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Solution

The fourth proportional to 8,574.12, 12,860.10 and 3,380.40 is: 5,070.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,574.12 : 12,860.10 = 3,380.40 : x
  2. Step 2: Convert to fraction form
    8,574.12/12,860.10 = 3,380.40/x
  3. Step 3: Cross multiply
    8,574.12x = 12,860.10 × 3,380.40
  4. Step 4: Simplify right side
    8,574.12x = 43,472,282.04
  5. Step 5: Solve for x
    x = 43,472,282.04/8,574.12
  6. Step 6: Final answer
    x = 5,070.17

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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.