Home / 5,415.15-7,472.10-3,289.58

Finding the Fourth Proportional to 5,415.15, 7,472.10 and 3,289.58

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Solution

The fourth proportional to 5,415.15, 7,472.10 and 3,289.58 is: 4,539.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.15 : 7,472.10 = 3,289.58 : x
  2. Step 2: Convert to fraction form
    5,415.15/7,472.10 = 3,289.58/x
  3. Step 3: Cross multiply
    5,415.15x = 7,472.10 × 3,289.58
  4. Step 4: Simplify right side
    5,415.15x = 24,580,073.71
  5. Step 5: Solve for x
    x = 24,580,073.71/5,415.15
  6. Step 6: Final answer
    x = 4,539.13

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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.