Home / 1,789.12-2,470.08-1,417.60

Finding the Fourth Proportional to 1,789.12, 2,470.08 and 1,417.60

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Solution

The fourth proportional to 1,789.12, 2,470.08 and 1,417.60 is: 1,957.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,789.12 : 2,470.08 = 1,417.60 : x
  2. Step 2: Convert to fraction form
    1,789.12/2,470.08 = 1,417.60/x
  3. Step 3: Cross multiply
    1,789.12x = 2,470.08 × 1,417.60
  4. Step 4: Simplify right side
    1,789.12x = 3,501,585.41
  5. Step 5: Solve for x
    x = 3,501,585.41/1,789.12
  6. Step 6: Final answer
    x = 1,957.16

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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.