Home / 1,465.20-2,019.60-1,145.61

Finding the Fourth Proportional to 1,465.20, 2,019.60 and 1,145.61

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Solution

The fourth proportional to 1,465.20, 2,019.60 and 1,145.61 is: 1,579.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,465.20 : 2,019.60 = 1,145.61 : x
  2. Step 2: Convert to fraction form
    1,465.20/2,019.60 = 1,145.61/x
  3. Step 3: Cross multiply
    1,465.20x = 2,019.60 × 1,145.61
  4. Step 4: Simplify right side
    1,465.20x = 2,313,673.96
  5. Step 5: Solve for x
    x = 2,313,673.96/1,465.20
  6. Step 6: Final answer
    x = 1,579.08

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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.