Home / 1,319.20-1,968.55-1,144.24

Finding the Fourth Proportional to 1,319.20, 1,968.55 and 1,144.24

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Solution

The fourth proportional to 1,319.20, 1,968.55 and 1,144.24 is: 1,707.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319.20 : 1,968.55 = 1,144.24 : x
  2. Step 2: Convert to fraction form
    1,319.20/1,968.55 = 1,144.24/x
  3. Step 3: Cross multiply
    1,319.20x = 1,968.55 × 1,144.24
  4. Step 4: Simplify right side
    1,319.20x = 2,252,483.81
  5. Step 5: Solve for x
    x = 2,252,483.81/1,319.20
  6. Step 6: Final answer
    x = 1,707.47

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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.