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Finding the Fourth Proportional to 8,340.03, 12,510.45 and 3,145.50

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Solution

The fourth proportional to 8,340.03, 12,510.45 and 3,145.50 is: 4,718.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,340.03 : 12,510.45 = 3,145.50 : x
  2. Step 2: Convert to fraction form
    8,340.03/12,510.45 = 3,145.50/x
  3. Step 3: Cross multiply
    8,340.03x = 12,510.45 × 3,145.50
  4. Step 4: Simplify right side
    8,340.03x = 39,351,620.48
  5. Step 5: Solve for x
    x = 39,351,620.48/8,340.03
  6. Step 6: Final answer
    x = 4,718.40

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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.