Home / 4,613.70-6,921.45-1,981.20

Finding the Fourth Proportional to 4,613.70, 6,921.45 and 1,981.20

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Solution

The fourth proportional to 4,613.70, 6,921.45 and 1,981.20 is: 2,972.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,613.70 : 6,921.45 = 1,981.20 : x
  2. Step 2: Convert to fraction form
    4,613.70/6,921.45 = 1,981.20/x
  3. Step 3: Cross multiply
    4,613.70x = 6,921.45 × 1,981.20
  4. Step 4: Simplify right side
    4,613.70x = 13,712,776.74
  5. Step 5: Solve for x
    x = 13,712,776.74/4,613.70
  6. Step 6: Final answer
    x = 2,972.19

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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.