Home / 4,089.12-5,642.81-2,320.69

Finding the Fourth Proportional to 4,089.12, 5,642.81 and 2,320.69

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Solution

The fourth proportional to 4,089.12, 5,642.81 and 2,320.69 is: 3,202.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,089.12 : 5,642.81 = 2,320.69 : x
  2. Step 2: Convert to fraction form
    4,089.12/5,642.81 = 2,320.69/x
  3. Step 3: Cross multiply
    4,089.12x = 5,642.81 × 2,320.69
  4. Step 4: Simplify right side
    4,089.12x = 13,095,204.43
  5. Step 5: Solve for x
    x = 13,095,204.43/4,089.12
  6. Step 6: Final answer
    x = 3,202.45

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Half scale
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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.