Home / 1,318.23-1,962.90-1,271.52

Finding the Fourth Proportional to 1,318.23, 1,962.90 and 1,271.52

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Solution

The fourth proportional to 1,318.23, 1,962.90 and 1,271.52 is: 1,893.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318.23 : 1,962.90 = 1,271.52 : x
  2. Step 2: Convert to fraction form
    1,318.23/1,962.90 = 1,271.52/x
  3. Step 3: Cross multiply
    1,318.23x = 1,962.90 × 1,271.52
  4. Step 4: Simplify right side
    1,318.23x = 2,495,866.61
  5. Step 5: Solve for x
    x = 2,495,866.61/1,318.23
  6. Step 6: Final answer
    x = 1,893.35

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.