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Finding the Fourth Proportional to 10,977.99, 15,148.22 and 6,261.99

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Solution

The fourth proportional to 10,977.99, 15,148.22 and 6,261.99 is: 8,640.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,977.99 : 15,148.22 = 6,261.99 : x
  2. Step 2: Convert to fraction form
    10,977.99/15,148.22 = 6,261.99/x
  3. Step 3: Cross multiply
    10,977.99x = 15,148.22 × 6,261.99
  4. Step 4: Simplify right side
    10,977.99x = 94,857,970.85
  5. Step 5: Solve for x
    x = 94,857,970.85/10,977.99
  6. Step 6: Final answer
    x = 8,640.74

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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.