Home / 2,688.20-4,032.30-2,256.20

Finding the Fourth Proportional to 2,688.20, 4,032.30 and 2,256.20

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Solution

The fourth proportional to 2,688.20, 4,032.30 and 2,256.20 is: 3,384.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.20 : 4,032.30 = 2,256.20 : x
  2. Step 2: Convert to fraction form
    2,688.20/4,032.30 = 2,256.20/x
  3. Step 3: Cross multiply
    2,688.20x = 4,032.30 × 2,256.20
  4. Step 4: Simplify right side
    2,688.20x = 9,097,675.26
  5. Step 5: Solve for x
    x = 9,097,675.26/2,688.20
  6. Step 6: Final answer
    x = 3,384.30

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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.