Home / 8,325.12-12,478.08-3,125.76

Finding the Fourth Proportional to 8,325.12, 12,478.08 and 3,125.76

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Solution

The fourth proportional to 8,325.12, 12,478.08 and 3,125.76 is: 4,685.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,325.12 : 12,478.08 = 3,125.76 : x
  2. Step 2: Convert to fraction form
    8,325.12/12,478.08 = 3,125.76/x
  3. Step 3: Cross multiply
    8,325.12x = 12,478.08 × 3,125.76
  4. Step 4: Simplify right side
    8,325.12x = 39,003,483.34
  5. Step 5: Solve for x
    x = 39,003,483.34/8,325.12
  6. Step 6: Final answer
    x = 4,685.04

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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.