Home / 4,320.80-5,964-2,643.20

Finding the Fourth Proportional to 4,320.80, 5,964 and 2,643.20

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Solution

The fourth proportional to 4,320.80, 5,964 and 2,643.20 is: 3,648.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,320.80 : 5,964 = 2,643.20 : x
  2. Step 2: Convert to fraction form
    4,320.80/5,964 = 2,643.20/x
  3. Step 3: Cross multiply
    4,320.80x = 5,964 × 2,643.20
  4. Step 4: Simplify right side
    4,320.80x = 15,764,044.80
  5. Step 5: Solve for x
    x = 15,764,044.80/4,320.80
  6. Step 6: Final answer
    x = 3,648.41

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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.