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Finding the Fourth Proportional to 6,653.76, 9,987.72 and 4,900.80

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Solution

The fourth proportional to 6,653.76, 9,987.72 and 4,900.80 is: 7,356.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,653.76 : 9,987.72 = 4,900.80 : x
  2. Step 2: Convert to fraction form
    6,653.76/9,987.72 = 4,900.80/x
  3. Step 3: Cross multiply
    6,653.76x = 9,987.72 × 4,900.80
  4. Step 4: Simplify right side
    6,653.76x = 48,947,818.18
  5. Step 5: Solve for x
    x = 48,947,818.18/6,653.76
  6. Step 6: Final answer
    x = 7,356.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.