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Finding the Fourth Proportional to 1,458.89, 2,013.48 and 928.20

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Solution

The fourth proportional to 1,458.89, 2,013.48 and 928.20 is: 1,281.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,458.89 : 2,013.48 = 928.20 : x
  2. Step 2: Convert to fraction form
    1,458.89/2,013.48 = 928.20/x
  3. Step 3: Cross multiply
    1,458.89x = 2,013.48 × 928.20
  4. Step 4: Simplify right side
    1,458.89x = 1,868,912.14
  5. Step 5: Solve for x
    x = 1,868,912.14/1,458.89
  6. Step 6: Final answer
    x = 1,281.06

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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.