Home / 1,771.42-2,444.62-974.78

Finding the Fourth Proportional to 1,771.42, 2,444.62 and 974.78

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Solution

The fourth proportional to 1,771.42, 2,444.62 and 974.78 is: 1,345.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,771.42 : 2,444.62 = 974.78 : x
  2. Step 2: Convert to fraction form
    1,771.42/2,444.62 = 974.78/x
  3. Step 3: Cross multiply
    1,771.42x = 2,444.62 × 974.78
  4. Step 4: Simplify right side
    1,771.42x = 2,382,966.68
  5. Step 5: Solve for x
    x = 2,382,966.68/1,771.42
  6. Step 6: Final answer
    x = 1,345.23

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.