Home / 1,806.08-2,492.40-1,020.20

Finding the Fourth Proportional to 1,806.08, 2,492.40 and 1,020.20

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Solution

The fourth proportional to 1,806.08, 2,492.40 and 1,020.20 is: 1,407.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,806.08 : 2,492.40 = 1,020.20 : x
  2. Step 2: Convert to fraction form
    1,806.08/2,492.40 = 1,020.20/x
  3. Step 3: Cross multiply
    1,806.08x = 2,492.40 × 1,020.20
  4. Step 4: Simplify right side
    1,806.08x = 2,542,746.48
  5. Step 5: Solve for x
    x = 2,542,746.48/1,806.08
  6. Step 6: Final answer
    x = 1,407.88

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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.