Home / 1,478.08-2,206.55-1,426.78

Finding the Fourth Proportional to 1,478.08, 2,206.55 and 1,426.78

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Solution

The fourth proportional to 1,478.08, 2,206.55 and 1,426.78 is: 2,129.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,478.08 : 2,206.55 = 1,426.78 : x
  2. Step 2: Convert to fraction form
    1,478.08/2,206.55 = 1,426.78/x
  3. Step 3: Cross multiply
    1,478.08x = 2,206.55 × 1,426.78
  4. Step 4: Simplify right side
    1,478.08x = 3,148,261.41
  5. Step 5: Solve for x
    x = 3,148,261.41/1,478.08
  6. Step 6: Final answer
    x = 2,129.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.