Home / 8,111.72-11,192.90-4,574.86

Finding the Fourth Proportional to 8,111.72, 11,192.90 and 4,574.86

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Solution

The fourth proportional to 8,111.72, 11,192.90 and 4,574.86 is: 6,312.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,111.72 : 11,192.90 = 4,574.86 : x
  2. Step 2: Convert to fraction form
    8,111.72/11,192.90 = 4,574.86/x
  3. Step 3: Cross multiply
    8,111.72x = 11,192.90 × 4,574.86
  4. Step 4: Simplify right side
    8,111.72x = 51,205,950.49
  5. Step 5: Solve for x
    x = 51,205,950.49/8,111.72
  6. Step 6: Final answer
    x = 6,312.59

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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.