Home / 5,143.16-7,714.78-1,247.58

Finding the Fourth Proportional to 5,143.16, 7,714.78 and 1,247.58

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Solution

The fourth proportional to 5,143.16, 7,714.78 and 1,247.58 is: 1,871.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.16 : 7,714.78 = 1,247.58 : x
  2. Step 2: Convert to fraction form
    5,143.16/7,714.78 = 1,247.58/x
  3. Step 3: Cross multiply
    5,143.16x = 7,714.78 × 1,247.58
  4. Step 4: Simplify right side
    5,143.16x = 9,624,805.23
  5. Step 5: Solve for x
    x = 9,624,805.23/5,143.16
  6. Step 6: Final answer
    x = 1,871.38

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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.