Home / 8,759.45-13,139.27-2,916.05

Finding the Fourth Proportional to 8,759.45, 13,139.27 and 2,916.05

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Solution

The fourth proportional to 8,759.45, 13,139.27 and 2,916.05 is: 4,374.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,759.45 : 13,139.27 = 2,916.05 : x
  2. Step 2: Convert to fraction form
    8,759.45/13,139.27 = 2,916.05/x
  3. Step 3: Cross multiply
    8,759.45x = 13,139.27 × 2,916.05
  4. Step 4: Simplify right side
    8,759.45x = 38,314,688.01
  5. Step 5: Solve for x
    x = 38,314,688.01/8,759.45
  6. Step 6: Final answer
    x = 4,374.10

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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.