Home / 2,108.08-3,159.18-1,643.74

Finding the Fourth Proportional to 2,108.08, 3,159.18 and 1,643.74

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Solution

The fourth proportional to 2,108.08, 3,159.18 and 1,643.74 is: 2,463.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.08 : 3,159.18 = 1,643.74 : x
  2. Step 2: Convert to fraction form
    2,108.08/3,159.18 = 1,643.74/x
  3. Step 3: Cross multiply
    2,108.08x = 3,159.18 × 1,643.74
  4. Step 4: Simplify right side
    2,108.08x = 5,192,870.53
  5. Step 5: Solve for x
    x = 5,192,870.53/2,108.08
  6. Step 6: Final answer
    x = 2,463.32

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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.