Home / 3,521.90-5,307.08-2,919.18

Finding the Fourth Proportional to 3,521.90, 5,307.08 and 2,919.18

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Solution

The fourth proportional to 3,521.90, 5,307.08 and 2,919.18 is: 4,398.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,521.90 : 5,307.08 = 2,919.18 : x
  2. Step 2: Convert to fraction form
    3,521.90/5,307.08 = 2,919.18/x
  3. Step 3: Cross multiply
    3,521.90x = 5,307.08 × 2,919.18
  4. Step 4: Simplify right side
    3,521.90x = 15,492,321.79
  5. Step 5: Solve for x
    x = 15,492,321.79/3,521.90
  6. Step 6: Final answer
    x = 4,398.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.