Home / 1,535.90-2,118.21-1,119.02

Finding the Fourth Proportional to 1,535.90, 2,118.21 and 1,119.02

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Solution

The fourth proportional to 1,535.90, 2,118.21 and 1,119.02 is: 1,543.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,535.90 : 2,118.21 = 1,119.02 : x
  2. Step 2: Convert to fraction form
    1,535.90/2,118.21 = 1,119.02/x
  3. Step 3: Cross multiply
    1,535.90x = 2,118.21 × 1,119.02
  4. Step 4: Simplify right side
    1,535.90x = 2,370,319.35
  5. Step 5: Solve for x
    x = 2,370,319.35/1,535.90
  6. Step 6: Final answer
    x = 1,543.28

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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.