Home / 3,140.93-4,711.40-1,291.55

Finding the Fourth Proportional to 3,140.93, 4,711.40 and 1,291.55

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Solution

The fourth proportional to 3,140.93, 4,711.40 and 1,291.55 is: 1,937.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.93 : 4,711.40 = 1,291.55 : x
  2. Step 2: Convert to fraction form
    3,140.93/4,711.40 = 1,291.55/x
  3. Step 3: Cross multiply
    3,140.93x = 4,711.40 × 1,291.55
  4. Step 4: Simplify right side
    3,140.93x = 6,085,002.21
  5. Step 5: Solve for x
    x = 6,085,002.21/3,140.93
  6. Step 6: Final answer
    x = 1,937.33

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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.