Home / 1,487.25-2,051.55-927.45

Finding the Fourth Proportional to 1,487.25, 2,051.55 and 927.45

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Solution

The fourth proportional to 1,487.25, 2,051.55 and 927.45 is: 1,279.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487.25 : 2,051.55 = 927.45 : x
  2. Step 2: Convert to fraction form
    1,487.25/2,051.55 = 927.45/x
  3. Step 3: Cross multiply
    1,487.25x = 2,051.55 × 927.45
  4. Step 4: Simplify right side
    1,487.25x = 1,902,710.05
  5. Step 5: Solve for x
    x = 1,902,710.05/1,487.25
  6. Step 6: Final answer
    x = 1,279.35

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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.