Home / 1,812.28-2,500.80-1,026.40

Finding the Fourth Proportional to 1,812.28, 2,500.80 and 1,026.40

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Solution

The fourth proportional to 1,812.28, 2,500.80 and 1,026.40 is: 1,416.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.28 : 2,500.80 = 1,026.40 : x
  2. Step 2: Convert to fraction form
    1,812.28/2,500.80 = 1,026.40/x
  3. Step 3: Cross multiply
    1,812.28x = 2,500.80 × 1,026.40
  4. Step 4: Simplify right side
    1,812.28x = 2,566,821.12
  5. Step 5: Solve for x
    x = 2,566,821.12/1,812.28
  6. Step 6: Final answer
    x = 1,416.35

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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.