Home / 2,148.39-2,964.78-1,264.05

Finding the Fourth Proportional to 2,148.39, 2,964.78 and 1,264.05

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Solution

The fourth proportional to 2,148.39, 2,964.78 and 1,264.05 is: 1,744.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,148.39 : 2,964.78 = 1,264.05 : x
  2. Step 2: Convert to fraction form
    2,148.39/2,964.78 = 1,264.05/x
  3. Step 3: Cross multiply
    2,148.39x = 2,964.78 × 1,264.05
  4. Step 4: Simplify right side
    2,148.39x = 3,747,630.16
  5. Step 5: Solve for x
    x = 3,747,630.16/2,148.39
  6. Step 6: Final answer
    x = 1,744.39

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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.