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Finding the Fourth Proportional to 8,782.88, 12,125.70 and 5,803.70

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Solution

The fourth proportional to 8,782.88, 12,125.70 and 5,803.70 is: 8,012.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,782.88 : 12,125.70 = 5,803.70 : x
  2. Step 2: Convert to fraction form
    8,782.88/12,125.70 = 5,803.70/x
  3. Step 3: Cross multiply
    8,782.88x = 12,125.70 × 5,803.70
  4. Step 4: Simplify right side
    8,782.88x = 70,373,925.09
  5. Step 5: Solve for x
    x = 70,373,925.09/8,782.88
  6. Step 6: Final answer
    x = 8,012.63

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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.