Home / 2,478.18-3,415.38-2,407.10

Finding the Fourth Proportional to 2,478.18, 3,415.38 and 2,407.10

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Solution

The fourth proportional to 2,478.18, 3,415.38 and 2,407.10 is: 3,317.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.18 : 3,415.38 = 2,407.10 : x
  2. Step 2: Convert to fraction form
    2,478.18/3,415.38 = 2,407.10/x
  3. Step 3: Cross multiply
    2,478.18x = 3,415.38 × 2,407.10
  4. Step 4: Simplify right side
    2,478.18x = 8,221,161.20
  5. Step 5: Solve for x
    x = 8,221,161.20/2,478.18
  6. Step 6: Final answer
    x = 3,317.42

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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.