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Finding the Fourth Proportional to 8,400.95, 12,600.96 and 2,557.10

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Solution

The fourth proportional to 8,400.95, 12,600.96 and 2,557.10 is: 3,835.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,400.95 : 12,600.96 = 2,557.10 : x
  2. Step 2: Convert to fraction form
    8,400.95/12,600.96 = 2,557.10/x
  3. Step 3: Cross multiply
    8,400.95x = 12,600.96 × 2,557.10
  4. Step 4: Simplify right side
    8,400.95x = 32,221,851.81
  5. Step 5: Solve for x
    x = 32,221,851.81/8,400.95
  6. Step 6: Final answer
    x = 3,835.50

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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.