Home / 8,977.29-12,389.55-5,442.99

Finding the Fourth Proportional to 8,977.29, 12,389.55 and 5,442.99

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Solution

The fourth proportional to 8,977.29, 12,389.55 and 5,442.99 is: 7,511.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,977.29 : 12,389.55 = 5,442.99 : x
  2. Step 2: Convert to fraction form
    8,977.29/12,389.55 = 5,442.99/x
  3. Step 3: Cross multiply
    8,977.29x = 12,389.55 × 5,442.99
  4. Step 4: Simplify right side
    8,977.29x = 67,436,196.75
  5. Step 5: Solve for x
    x = 67,436,196.75/8,977.29
  6. Step 6: Final answer
    x = 7,511.87

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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.