Home / 2,478.11-3,419.72-1,359.02

Finding the Fourth Proportional to 2,478.11, 3,419.72 and 1,359.02

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Solution

The fourth proportional to 2,478.11, 3,419.72 and 1,359.02 is: 1,875.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.11 : 3,419.72 = 1,359.02 : x
  2. Step 2: Convert to fraction form
    2,478.11/3,419.72 = 1,359.02/x
  3. Step 3: Cross multiply
    2,478.11x = 3,419.72 × 1,359.02
  4. Step 4: Simplify right side
    2,478.11x = 4,647,461.08
  5. Step 5: Solve for x
    x = 4,647,461.08/2,478.11
  6. Step 6: Final answer
    x = 1,875.41

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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.