Home / 8,811.30-12,156.44-5,031.74

Finding the Fourth Proportional to 8,811.30, 12,156.44 and 5,031.74

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Solution

The fourth proportional to 8,811.30, 12,156.44 and 5,031.74 is: 6,942.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,811.30 : 12,156.44 = 5,031.74 : x
  2. Step 2: Convert to fraction form
    8,811.30/12,156.44 = 5,031.74/x
  3. Step 3: Cross multiply
    8,811.30x = 12,156.44 × 5,031.74
  4. Step 4: Simplify right side
    8,811.30x = 61,168,045.41
  5. Step 5: Solve for x
    x = 61,168,045.41/8,811.30
  6. Step 6: Final answer
    x = 6,942.00

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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.