Home / 3,420.57-4,720.74-2,095.15

Finding the Fourth Proportional to 3,420.57, 4,720.74 and 2,095.15

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Solution

The fourth proportional to 3,420.57, 4,720.74 and 2,095.15 is: 2,891.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.57 : 4,720.74 = 2,095.15 : x
  2. Step 2: Convert to fraction form
    3,420.57/4,720.74 = 2,095.15/x
  3. Step 3: Cross multiply
    3,420.57x = 4,720.74 × 2,095.15
  4. Step 4: Simplify right side
    3,420.57x = 9,890,658.41
  5. Step 5: Solve for x
    x = 9,890,658.41/3,420.57
  6. Step 6: Final answer
    x = 2,891.52

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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.