Home / 4,643.12-6,402.84-2,781.20

Finding the Fourth Proportional to 4,643.12, 6,402.84 and 2,781.20

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Solution

The fourth proportional to 4,643.12, 6,402.84 and 2,781.20 is: 3,835.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,643.12 : 6,402.84 = 2,781.20 : x
  2. Step 2: Convert to fraction form
    4,643.12/6,402.84 = 2,781.20/x
  3. Step 3: Cross multiply
    4,643.12x = 6,402.84 × 2,781.20
  4. Step 4: Simplify right side
    4,643.12x = 17,807,578.61
  5. Step 5: Solve for x
    x = 17,807,578.61/4,643.12
  6. Step 6: Final answer
    x = 3,835.26

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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.