Home / 8,143.04-12,218.40-2,947.52

Finding the Fourth Proportional to 8,143.04, 12,218.40 and 2,947.52

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Solution

The fourth proportional to 8,143.04, 12,218.40 and 2,947.52 is: 4,422.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,143.04 : 12,218.40 = 2,947.52 : x
  2. Step 2: Convert to fraction form
    8,143.04/12,218.40 = 2,947.52/x
  3. Step 3: Cross multiply
    8,143.04x = 12,218.40 × 2,947.52
  4. Step 4: Simplify right side
    8,143.04x = 36,013,978.37
  5. Step 5: Solve for x
    x = 36,013,978.37/8,143.04
  6. Step 6: Final answer
    x = 4,422.67

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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.