Home / 7,972.95-11,946.20-5,621.49

Finding the Fourth Proportional to 7,972.95, 11,946.20 and 5,621.49

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Solution

The fourth proportional to 7,972.95, 11,946.20 and 5,621.49 is: 8,422.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,972.95 : 11,946.20 = 5,621.49 : x
  2. Step 2: Convert to fraction form
    7,972.95/11,946.20 = 5,621.49/x
  3. Step 3: Cross multiply
    7,972.95x = 11,946.20 × 5,621.49
  4. Step 4: Simplify right side
    7,972.95x = 67,155,443.84
  5. Step 5: Solve for x
    x = 67,155,443.84/7,972.95
  6. Step 6: Final answer
    x = 8,422.91

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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.