Home / 1,658.03-2,288.22-912.13

Finding the Fourth Proportional to 1,658.03, 2,288.22 and 912.13

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Solution

The fourth proportional to 1,658.03, 2,288.22 and 912.13 is: 1,258.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,658.03 : 2,288.22 = 912.13 : x
  2. Step 2: Convert to fraction form
    1,658.03/2,288.22 = 912.13/x
  3. Step 3: Cross multiply
    1,658.03x = 2,288.22 × 912.13
  4. Step 4: Simplify right side
    1,658.03x = 2,087,154.11
  5. Step 5: Solve for x
    x = 2,087,154.11/1,658.03
  6. Step 6: Final answer
    x = 1,258.82

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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.