Home / 5,151.78-7,727.59-1,256.18

Finding the Fourth Proportional to 5,151.78, 7,727.59 and 1,256.18

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Solution

The fourth proportional to 5,151.78, 7,727.59 and 1,256.18 is: 1,884.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,151.78 : 7,727.59 = 1,256.18 : x
  2. Step 2: Convert to fraction form
    5,151.78/7,727.59 = 1,256.18/x
  3. Step 3: Cross multiply
    5,151.78x = 7,727.59 × 1,256.18
  4. Step 4: Simplify right side
    5,151.78x = 9,707,244.01
  5. Step 5: Solve for x
    x = 9,707,244.01/5,151.78
  6. Step 6: Final answer
    x = 1,884.25

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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.