Home / 1,417.20-1,957.60-1,181.91

Finding the Fourth Proportional to 1,417.20, 1,957.60 and 1,181.91

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Solution

The fourth proportional to 1,417.20, 1,957.60 and 1,181.91 is: 1,632.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,417.20 : 1,957.60 = 1,181.91 : x
  2. Step 2: Convert to fraction form
    1,417.20/1,957.60 = 1,181.91/x
  3. Step 3: Cross multiply
    1,417.20x = 1,957.60 × 1,181.91
  4. Step 4: Simplify right side
    1,417.20x = 2,313,715.83
  5. Step 5: Solve for x
    x = 2,313,715.83/1,417.20
  6. Step 6: Final answer
    x = 1,632.60

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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.