Home / 7,661.29-11,486.53-2,977.40

Finding the Fourth Proportional to 7,661.29, 11,486.53 and 2,977.40

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Solution

The fourth proportional to 7,661.29, 11,486.53 and 2,977.40 is: 4,463.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,661.29 : 11,486.53 = 2,977.40 : x
  2. Step 2: Convert to fraction form
    7,661.29/11,486.53 = 2,977.40/x
  3. Step 3: Cross multiply
    7,661.29x = 11,486.53 × 2,977.40
  4. Step 4: Simplify right side
    7,661.29x = 34,199,929.55
  5. Step 5: Solve for x
    x = 34,199,929.55/7,661.29
  6. Step 6: Final answer
    x = 4,463.99

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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.