Home / 3,920.70-5,411.16-2,349.06

Finding the Fourth Proportional to 3,920.70, 5,411.16 and 2,349.06

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Solution

The fourth proportional to 3,920.70, 5,411.16 and 2,349.06 is: 3,242.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.70 : 5,411.16 = 2,349.06 : x
  2. Step 2: Convert to fraction form
    3,920.70/5,411.16 = 2,349.06/x
  3. Step 3: Cross multiply
    3,920.70x = 5,411.16 × 2,349.06
  4. Step 4: Simplify right side
    3,920.70x = 12,711,139.51
  5. Step 5: Solve for x
    x = 12,711,139.51/3,920.70
  6. Step 6: Final answer
    x = 3,242.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.