Home / 1,577.10-2,176.44-947.72

Finding the Fourth Proportional to 1,577.10, 2,176.44 and 947.72

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Solution

The fourth proportional to 1,577.10, 2,176.44 and 947.72 is: 1,307.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,577.10 : 2,176.44 = 947.72 : x
  2. Step 2: Convert to fraction form
    1,577.10/2,176.44 = 947.72/x
  3. Step 3: Cross multiply
    1,577.10x = 2,176.44 × 947.72
  4. Step 4: Simplify right side
    1,577.10x = 2,062,655.72
  5. Step 5: Solve for x
    x = 2,062,655.72/1,577.10
  6. Step 6: Final answer
    x = 1,307.88

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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.