Home / 3,312.61-4,969.55-1,120.75

Finding the Fourth Proportional to 3,312.61, 4,969.55 and 1,120.75

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Solution

The fourth proportional to 3,312.61, 4,969.55 and 1,120.75 is: 1,681.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,312.61 : 4,969.55 = 1,120.75 : x
  2. Step 2: Convert to fraction form
    3,312.61/4,969.55 = 1,120.75/x
  3. Step 3: Cross multiply
    3,312.61x = 4,969.55 × 1,120.75
  4. Step 4: Simplify right side
    3,312.61x = 5,569,617.56
  5. Step 5: Solve for x
    x = 5,569,617.56/3,312.61
  6. Step 6: Final answer
    x = 1,681.34

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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.