Home / 8,428.15-12,642.38-4,263.13

Finding the Fourth Proportional to 8,428.15, 12,642.38 and 4,263.13

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Solution

The fourth proportional to 8,428.15, 12,642.38 and 4,263.13 is: 6,394.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.15 : 12,642.38 = 4,263.13 : x
  2. Step 2: Convert to fraction form
    8,428.15/12,642.38 = 4,263.13/x
  3. Step 3: Cross multiply
    8,428.15x = 12,642.38 × 4,263.13
  4. Step 4: Simplify right side
    8,428.15x = 53,896,119.92
  5. Step 5: Solve for x
    x = 53,896,119.92/8,428.15
  6. Step 6: Final answer
    x = 6,394.77

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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.