Home / 2,585.40-3,878.52-1,612.56

Finding the Fourth Proportional to 2,585.40, 3,878.52 and 1,612.56

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Solution

The fourth proportional to 2,585.40, 3,878.52 and 1,612.56 is: 2,419.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,585.40 : 3,878.52 = 1,612.56 : x
  2. Step 2: Convert to fraction form
    2,585.40/3,878.52 = 1,612.56/x
  3. Step 3: Cross multiply
    2,585.40x = 3,878.52 × 1,612.56
  4. Step 4: Simplify right side
    2,585.40x = 6,254,346.21
  5. Step 5: Solve for x
    x = 6,254,346.21/2,585.40
  6. Step 6: Final answer
    x = 2,419.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.