Home / 3,391.46-5,085.60-1,312.45

Finding the Fourth Proportional to 3,391.46, 5,085.60 and 1,312.45

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Solution

The fourth proportional to 3,391.46, 5,085.60 and 1,312.45 is: 1,968.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.46 : 5,085.60 = 1,312.45 : x
  2. Step 2: Convert to fraction form
    3,391.46/5,085.60 = 1,312.45/x
  3. Step 3: Cross multiply
    3,391.46x = 5,085.60 × 1,312.45
  4. Step 4: Simplify right side
    3,391.46x = 6,674,585.47
  5. Step 5: Solve for x
    x = 6,674,585.47/3,391.46
  6. Step 6: Final answer
    x = 1,968.05

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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.