Home / 5,145.71-7,718.51-1,250.12

Finding the Fourth Proportional to 5,145.71, 7,718.51 and 1,250.12

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Solution

The fourth proportional to 5,145.71, 7,718.51 and 1,250.12 is: 1,875.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.71 : 7,718.51 = 1,250.12 : x
  2. Step 2: Convert to fraction form
    5,145.71/7,718.51 = 1,250.12/x
  3. Step 3: Cross multiply
    5,145.71x = 7,718.51 × 1,250.12
  4. Step 4: Simplify right side
    5,145.71x = 9,649,018.88
  5. Step 5: Solve for x
    x = 9,649,018.88/5,145.71
  6. Step 6: Final answer
    x = 1,875.16

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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.