Home / 1,358.28-2,048.31-1,277.64

Finding the Fourth Proportional to 1,358.28, 2,048.31 and 1,277.64

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Solution

The fourth proportional to 1,358.28, 2,048.31 and 1,277.64 is: 1,926.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,358.28 : 2,048.31 = 1,277.64 : x
  2. Step 2: Convert to fraction form
    1,358.28/2,048.31 = 1,277.64/x
  3. Step 3: Cross multiply
    1,358.28x = 2,048.31 × 1,277.64
  4. Step 4: Simplify right side
    1,358.28x = 2,617,002.79
  5. Step 5: Solve for x
    x = 2,617,002.79/1,358.28
  6. Step 6: Final answer
    x = 1,926.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.