Home / 5,618.48-8,428.51-2,985.29

Finding the Fourth Proportional to 5,618.48, 8,428.51 and 2,985.29

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Solution

The fourth proportional to 5,618.48, 8,428.51 and 2,985.29 is: 4,478.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,618.48 : 8,428.51 = 2,985.29 : x
  2. Step 2: Convert to fraction form
    5,618.48/8,428.51 = 2,985.29/x
  3. Step 3: Cross multiply
    5,618.48x = 8,428.51 × 2,985.29
  4. Step 4: Simplify right side
    5,618.48x = 25,161,567.69
  5. Step 5: Solve for x
    x = 25,161,567.69/5,618.48
  6. Step 6: Final answer
    x = 4,478.36

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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.