Home / 1,614.16-2,228.61-1,439.20

Finding the Fourth Proportional to 1,614.16, 2,228.61 and 1,439.20

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Solution

The fourth proportional to 1,614.16, 2,228.61 and 1,439.20 is: 1,987.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,614.16 : 2,228.61 = 1,439.20 : x
  2. Step 2: Convert to fraction form
    1,614.16/2,228.61 = 1,439.20/x
  3. Step 3: Cross multiply
    1,614.16x = 2,228.61 × 1,439.20
  4. Step 4: Simplify right side
    1,614.16x = 3,207,415.51
  5. Step 5: Solve for x
    x = 3,207,415.51/1,614.16
  6. Step 6: Final answer
    x = 1,987.05

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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.