Home / 5,415.10-8,117.90-2,602.53

Finding the Fourth Proportional to 5,415.10, 8,117.90 and 2,602.53

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Solution

The fourth proportional to 5,415.10, 8,117.90 and 2,602.53 is: 3,901.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.10 : 8,117.90 = 2,602.53 : x
  2. Step 2: Convert to fraction form
    5,415.10/8,117.90 = 2,602.53/x
  3. Step 3: Cross multiply
    5,415.10x = 8,117.90 × 2,602.53
  4. Step 4: Simplify right side
    5,415.10x = 21,127,105.09
  5. Step 5: Solve for x
    x = 21,127,105.09/5,415.10
  6. Step 6: Final answer
    x = 3,901.52

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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.