Home / 1,378.92-2,066.58-1,013.88

Finding the Fourth Proportional to 1,378.92, 2,066.58 and 1,013.88

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Solution

The fourth proportional to 1,378.92, 2,066.58 and 1,013.88 is: 1,519.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378.92 : 2,066.58 = 1,013.88 : x
  2. Step 2: Convert to fraction form
    1,378.92/2,066.58 = 1,013.88/x
  3. Step 3: Cross multiply
    1,378.92x = 2,066.58 × 1,013.88
  4. Step 4: Simplify right side
    1,378.92x = 2,095,264.13
  5. Step 5: Solve for x
    x = 2,095,264.13/1,378.92
  6. Step 6: Final answer
    x = 1,519.50

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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.