Home / 1,643.39-2,462.78-1,088.74

Finding the Fourth Proportional to 1,643.39, 2,462.78 and 1,088.74

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Solution

The fourth proportional to 1,643.39, 2,462.78 and 1,088.74 is: 1,631.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,643.39 : 2,462.78 = 1,088.74 : x
  2. Step 2: Convert to fraction form
    1,643.39/2,462.78 = 1,088.74/x
  3. Step 3: Cross multiply
    1,643.39x = 2,462.78 × 1,088.74
  4. Step 4: Simplify right side
    1,643.39x = 2,681,327.10
  5. Step 5: Solve for x
    x = 2,681,327.10/1,643.39
  6. Step 6: Final answer
    x = 1,631.58

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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.