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Finding the Fourth Proportional to 2,688.52, 3,703.54 and 2,288.90

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Solution

The fourth proportional to 2,688.52, 3,703.54 and 2,288.90 is: 3,153.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.52 : 3,703.54 = 2,288.90 : x
  2. Step 2: Convert to fraction form
    2,688.52/3,703.54 = 2,288.90/x
  3. Step 3: Cross multiply
    2,688.52x = 3,703.54 × 2,288.90
  4. Step 4: Simplify right side
    2,688.52x = 8,477,032.71
  5. Step 5: Solve for x
    x = 8,477,032.71/2,688.52
  6. Step 6: Final answer
    x = 3,153.05

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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.