Home / 1,572.02-2,169.18-899.72

Finding the Fourth Proportional to 1,572.02, 2,169.18 and 899.72

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Solution

The fourth proportional to 1,572.02, 2,169.18 and 899.72 is: 1,241.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,572.02 : 2,169.18 = 899.72 : x
  2. Step 2: Convert to fraction form
    1,572.02/2,169.18 = 899.72/x
  3. Step 3: Cross multiply
    1,572.02x = 2,169.18 × 899.72
  4. Step 4: Simplify right side
    1,572.02x = 1,951,654.63
  5. Step 5: Solve for x
    x = 1,951,654.63/1,572.02
  6. Step 6: Final answer
    x = 1,241.49

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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.