Home / 1,307.10-1,961.88-1,277.13

Finding the Fourth Proportional to 1,307.10, 1,961.88 and 1,277.13

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Solution

The fourth proportional to 1,307.10, 1,961.88 and 1,277.13 is: 1,916.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,307.10 : 1,961.88 = 1,277.13 : x
  2. Step 2: Convert to fraction form
    1,307.10/1,961.88 = 1,277.13/x
  3. Step 3: Cross multiply
    1,307.10x = 1,961.88 × 1,277.13
  4. Step 4: Simplify right side
    1,307.10x = 2,505,575.80
  5. Step 5: Solve for x
    x = 2,505,575.80/1,307.10
  6. Step 6: Final answer
    x = 1,916.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.