Home / 2,688.14-4,032.31-740.49

Finding the Fourth Proportional to 2,688.14, 4,032.31 and 740.49

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Solution

The fourth proportional to 2,688.14, 4,032.31 and 740.49 is: 1,110.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.14 : 4,032.31 = 740.49 : x
  2. Step 2: Convert to fraction form
    2,688.14/4,032.31 = 740.49/x
  3. Step 3: Cross multiply
    2,688.14x = 4,032.31 × 740.49
  4. Step 4: Simplify right side
    2,688.14x = 2,985,893.46
  5. Step 5: Solve for x
    x = 2,985,893.46/2,688.14
  6. Step 6: Final answer
    x = 1,110.77

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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.