Home / 1,354.30-2,021.45-1,255.18

Finding the Fourth Proportional to 1,354.30, 2,021.45 and 1,255.18

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Solution

The fourth proportional to 1,354.30, 2,021.45 and 1,255.18 is: 1,873.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,354.30 : 2,021.45 = 1,255.18 : x
  2. Step 2: Convert to fraction form
    1,354.30/2,021.45 = 1,255.18/x
  3. Step 3: Cross multiply
    1,354.30x = 2,021.45 × 1,255.18
  4. Step 4: Simplify right side
    1,354.30x = 2,537,283.61
  5. Step 5: Solve for x
    x = 2,537,283.61/1,354.30
  6. Step 6: Final answer
    x = 1,873.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.