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Finding the Fourth Proportional to 8,750.50, 12,075.84 and 5,215.76

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Solution

The fourth proportional to 8,750.50, 12,075.84 and 5,215.76 is: 7,197.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,750.50 : 12,075.84 = 5,215.76 : x
  2. Step 2: Convert to fraction form
    8,750.50/12,075.84 = 5,215.76/x
  3. Step 3: Cross multiply
    8,750.50x = 12,075.84 × 5,215.76
  4. Step 4: Simplify right side
    8,750.50x = 62,984,668.14
  5. Step 5: Solve for x
    x = 62,984,668.14/8,750.50
  6. Step 6: Final answer
    x = 7,197.84

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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.