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Finding the Fourth Proportional to 8,777.90, 12,113.34 and 4,798.82

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Solution

The fourth proportional to 8,777.90, 12,113.34 and 4,798.82 is: 6,622.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,777.90 : 12,113.34 = 4,798.82 : x
  2. Step 2: Convert to fraction form
    8,777.90/12,113.34 = 4,798.82/x
  3. Step 3: Cross multiply
    8,777.90x = 12,113.34 × 4,798.82
  4. Step 4: Simplify right side
    8,777.90x = 58,129,738.26
  5. Step 5: Solve for x
    x = 58,129,738.26/8,777.90
  6. Step 6: Final answer
    x = 6,622.28

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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.