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Finding the Fourth Proportional to 2,122.90, 3,184.35 and 583.90

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Solution

The fourth proportional to 2,122.90, 3,184.35 and 583.90 is: 875.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.90 : 3,184.35 = 583.90 : x
  2. Step 2: Convert to fraction form
    2,122.90/3,184.35 = 583.90/x
  3. Step 3: Cross multiply
    2,122.90x = 3,184.35 × 583.90
  4. Step 4: Simplify right side
    2,122.90x = 1,859,341.97
  5. Step 5: Solve for x
    x = 1,859,341.97/2,122.90
  6. Step 6: Final answer
    x = 875.85

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1.5x scale

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.