Home / 2,380.47-3,285.66-1,585.13

Finding the Fourth Proportional to 2,380.47, 3,285.66 and 1,585.13

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Solution

The fourth proportional to 2,380.47, 3,285.66 and 1,585.13 is: 2,187.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,380.47 : 3,285.66 = 1,585.13 : x
  2. Step 2: Convert to fraction form
    2,380.47/3,285.66 = 1,585.13/x
  3. Step 3: Cross multiply
    2,380.47x = 3,285.66 × 1,585.13
  4. Step 4: Simplify right side
    2,380.47x = 5,208,181.81
  5. Step 5: Solve for x
    x = 5,208,181.81/2,380.47
  6. Step 6: Final answer
    x = 2,187.88

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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.