Home / 1,434.90-2,152.35-613.20

Finding the Fourth Proportional to 1,434.90, 2,152.35 and 613.20

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Solution

The fourth proportional to 1,434.90, 2,152.35 and 613.20 is: 919.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434.90 : 2,152.35 = 613.20 : x
  2. Step 2: Convert to fraction form
    1,434.90/2,152.35 = 613.20/x
  3. Step 3: Cross multiply
    1,434.90x = 2,152.35 × 613.20
  4. Step 4: Simplify right side
    1,434.90x = 1,319,821.02
  5. Step 5: Solve for x
    x = 1,319,821.02/1,434.90
  6. Step 6: Final answer
    x = 919.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.