Home / 3,140.30-4,710.12-1,291.62

Finding the Fourth Proportional to 3,140.30, 4,710.12 and 1,291.62

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Solution

The fourth proportional to 3,140.30, 4,710.12 and 1,291.62 is: 1,937.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.30 : 4,710.12 = 1,291.62 : x
  2. Step 2: Convert to fraction form
    3,140.30/4,710.12 = 1,291.62/x
  3. Step 3: Cross multiply
    3,140.30x = 4,710.12 × 1,291.62
  4. Step 4: Simplify right side
    3,140.30x = 6,083,685.19
  5. Step 5: Solve for x
    x = 6,083,685.19/3,140.30
  6. Step 6: Final answer
    x = 1,937.29

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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.