Home / 7,821.80-11,730.84-2,888.76

Finding the Fourth Proportional to 7,821.80, 11,730.84 and 2,888.76

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Solution

The fourth proportional to 7,821.80, 11,730.84 and 2,888.76 is: 4,332.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,821.80 : 11,730.84 = 2,888.76 : x
  2. Step 2: Convert to fraction form
    7,821.80/11,730.84 = 2,888.76/x
  3. Step 3: Cross multiply
    7,821.80x = 11,730.84 × 2,888.76
  4. Step 4: Simplify right side
    7,821.80x = 33,887,581.36
  5. Step 5: Solve for x
    x = 33,887,581.36/7,821.80
  6. Step 6: Final answer
    x = 4,332.45

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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.