Home / 5,317.51-7,977.12-1,618.87

Finding the Fourth Proportional to 5,317.51, 7,977.12 and 1,618.87

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Solution

The fourth proportional to 5,317.51, 7,977.12 and 1,618.87 is: 2,428.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,317.51 : 7,977.12 = 1,618.87 : x
  2. Step 2: Convert to fraction form
    5,317.51/7,977.12 = 1,618.87/x
  3. Step 3: Cross multiply
    5,317.51x = 7,977.12 × 1,618.87
  4. Step 4: Simplify right side
    5,317.51x = 12,913,920.25
  5. Step 5: Solve for x
    x = 12,913,920.25/5,317.51
  6. Step 6: Final answer
    x = 2,428.57

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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.