Home / 2,688.90-4,033.08-741.12

Finding the Fourth Proportional to 2,688.90, 4,033.08 and 741.12

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Solution

The fourth proportional to 2,688.90, 4,033.08 and 741.12 is: 1,111.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.90 : 4,033.08 = 741.12 : x
  2. Step 2: Convert to fraction form
    2,688.90/4,033.08 = 741.12/x
  3. Step 3: Cross multiply
    2,688.90x = 4,033.08 × 741.12
  4. Step 4: Simplify right side
    2,688.90x = 2,988,996.25
  5. Step 5: Solve for x
    x = 2,988,996.25/2,688.90
  6. Step 6: Final answer
    x = 1,111.61

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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.