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Finding the Fourth Proportional to 7,752.77, 10,698.36 and 4,215.95

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Solution

The fourth proportional to 7,752.77, 10,698.36 and 4,215.95 is: 5,817.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,752.77 : 10,698.36 = 4,215.95 : x
  2. Step 2: Convert to fraction form
    7,752.77/10,698.36 = 4,215.95/x
  3. Step 3: Cross multiply
    7,752.77x = 10,698.36 × 4,215.95
  4. Step 4: Simplify right side
    7,752.77x = 45,103,750.84
  5. Step 5: Solve for x
    x = 45,103,750.84/7,752.77
  6. Step 6: Final answer
    x = 5,817.76

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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.