Home / 1,298.12-1,948.54-1,104.28

Finding the Fourth Proportional to 1,298.12, 1,948.54 and 1,104.28

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Solution

The fourth proportional to 1,298.12, 1,948.54 and 1,104.28 is: 1,657.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298.12 : 1,948.54 = 1,104.28 : x
  2. Step 2: Convert to fraction form
    1,298.12/1,948.54 = 1,104.28/x
  3. Step 3: Cross multiply
    1,298.12x = 1,948.54 × 1,104.28
  4. Step 4: Simplify right side
    1,298.12x = 2,151,733.75
  5. Step 5: Solve for x
    x = 2,151,733.75/1,298.12
  6. Step 6: Final answer
    x = 1,657.58

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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.