Home / 1,769.24-2,442.12-1,071.20

Finding the Fourth Proportional to 1,769.24, 2,442.12 and 1,071.20

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Solution

The fourth proportional to 1,769.24, 2,442.12 and 1,071.20 is: 1,478.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,769.24 : 2,442.12 = 1,071.20 : x
  2. Step 2: Convert to fraction form
    1,769.24/2,442.12 = 1,071.20/x
  3. Step 3: Cross multiply
    1,769.24x = 2,442.12 × 1,071.20
  4. Step 4: Simplify right side
    1,769.24x = 2,615,998.94
  5. Step 5: Solve for x
    x = 2,615,998.94/1,769.24
  6. Step 6: Final answer
    x = 1,478.60

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1.5x scale

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.