Home / 1,615.07-2,229.14-985.46

Finding the Fourth Proportional to 1,615.07, 2,229.14 and 985.46

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Solution

The fourth proportional to 1,615.07, 2,229.14 and 985.46 is: 1,360.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,615.07 : 2,229.14 = 985.46 : x
  2. Step 2: Convert to fraction form
    1,615.07/2,229.14 = 985.46/x
  3. Step 3: Cross multiply
    1,615.07x = 2,229.14 × 985.46
  4. Step 4: Simplify right side
    1,615.07x = 2,196,737.73
  5. Step 5: Solve for x
    x = 2,196,737.73/1,615.07
  6. Step 6: Final answer
    x = 1,360.15

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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.