Home / 1,449.36-2,159.16-1,378.20

Finding the Fourth Proportional to 1,449.36, 2,159.16 and 1,378.20

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Solution

The fourth proportional to 1,449.36, 2,159.16 and 1,378.20 is: 2,053.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,449.36 : 2,159.16 = 1,378.20 : x
  2. Step 2: Convert to fraction form
    1,449.36/2,159.16 = 1,378.20/x
  3. Step 3: Cross multiply
    1,449.36x = 2,159.16 × 1,378.20
  4. Step 4: Simplify right side
    1,449.36x = 2,975,754.31
  5. Step 5: Solve for x
    x = 2,975,754.31/1,449.36
  6. Step 6: Final answer
    x = 2,053.15

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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.