Home / 1,812.21-2,500.47-1,065.66

Finding the Fourth Proportional to 1,812.21, 2,500.47 and 1,065.66

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Solution

The fourth proportional to 1,812.21, 2,500.47 and 1,065.66 is: 1,470.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.21 : 2,500.47 = 1,065.66 : x
  2. Step 2: Convert to fraction form
    1,812.21/2,500.47 = 1,065.66/x
  3. Step 3: Cross multiply
    1,812.21x = 2,500.47 × 1,065.66
  4. Step 4: Simplify right side
    1,812.21x = 2,664,641.48
  5. Step 5: Solve for x
    x = 2,664,641.48/1,812.21
  6. Step 6: Final answer
    x = 1,470.39

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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.