Home / 3,312.70-4,969.59-1,120.91

Finding the Fourth Proportional to 3,312.70, 4,969.59 and 1,120.91

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Solution

The fourth proportional to 3,312.70, 4,969.59 and 1,120.91 is: 1,681.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,312.70 : 4,969.59 = 1,120.91 : x
  2. Step 2: Convert to fraction form
    3,312.70/4,969.59 = 1,120.91/x
  3. Step 3: Cross multiply
    3,312.70x = 4,969.59 × 1,120.91
  4. Step 4: Simplify right side
    3,312.70x = 5,570,434.08
  5. Step 5: Solve for x
    x = 5,570,434.08/3,312.70
  6. Step 6: Final answer
    x = 1,681.54

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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.