Home / 1,577.40-2,176.18-947.96

Finding the Fourth Proportional to 1,577.40, 2,176.18 and 947.96

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Solution

The fourth proportional to 1,577.40, 2,176.18 and 947.96 is: 1,307.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,577.40 : 2,176.18 = 947.96 : x
  2. Step 2: Convert to fraction form
    1,577.40/2,176.18 = 947.96/x
  3. Step 3: Cross multiply
    1,577.40x = 2,176.18 × 947.96
  4. Step 4: Simplify right side
    1,577.40x = 2,062,931.59
  5. Step 5: Solve for x
    x = 2,062,931.59/1,577.40
  6. Step 6: Final answer
    x = 1,307.80

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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.