Home / 7,837.68-11,799.29-7,148.78

Finding the Fourth Proportional to 7,837.68, 11,799.29 and 7,148.78

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Solution

The fourth proportional to 7,837.68, 11,799.29 and 7,148.78 is: 10,762.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,837.68 : 11,799.29 = 7,148.78 : x
  2. Step 2: Convert to fraction form
    7,837.68/11,799.29 = 7,148.78/x
  3. Step 3: Cross multiply
    7,837.68x = 11,799.29 × 7,148.78
  4. Step 4: Simplify right side
    7,837.68x = 84,350,491.28
  5. Step 5: Solve for x
    x = 84,350,491.28/7,837.68
  6. Step 6: Final answer
    x = 10,762.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.