Home / 2,545.45-3,512.25-1,426.40

Finding the Fourth Proportional to 2,545.45, 3,512.25 and 1,426.40

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Solution

The fourth proportional to 2,545.45, 3,512.25 and 1,426.40 is: 1,968.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,545.45 : 3,512.25 = 1,426.40 : x
  2. Step 2: Convert to fraction form
    2,545.45/3,512.25 = 1,426.40/x
  3. Step 3: Cross multiply
    2,545.45x = 3,512.25 × 1,426.40
  4. Step 4: Simplify right side
    2,545.45x = 5,009,873.40
  5. Step 5: Solve for x
    x = 5,009,873.40/2,545.45
  6. Step 6: Final answer
    x = 1,968.17

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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.