Home / 3,140.40-4,707.08-1,842.80

Finding the Fourth Proportional to 3,140.40, 4,707.08 and 1,842.80

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Solution

The fourth proportional to 3,140.40, 4,707.08 and 1,842.80 is: 2,762.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.40 : 4,707.08 = 1,842.80 : x
  2. Step 2: Convert to fraction form
    3,140.40/4,707.08 = 1,842.80/x
  3. Step 3: Cross multiply
    3,140.40x = 4,707.08 × 1,842.80
  4. Step 4: Simplify right side
    3,140.40x = 8,674,207.02
  5. Step 5: Solve for x
    x = 8,674,207.02/3,140.40
  6. Step 6: Final answer
    x = 2,762.13

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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.