Home / 7,721.87-10,656.18-4,185.08

Finding the Fourth Proportional to 7,721.87, 10,656.18 and 4,185.08

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Solution

The fourth proportional to 7,721.87, 10,656.18 and 4,185.08 is: 5,775.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,721.87 : 10,656.18 = 4,185.08 : x
  2. Step 2: Convert to fraction form
    7,721.87/10,656.18 = 4,185.08/x
  3. Step 3: Cross multiply
    7,721.87x = 10,656.18 × 4,185.08
  4. Step 4: Simplify right side
    7,721.87x = 44,596,934.27
  5. Step 5: Solve for x
    x = 44,596,934.27/7,721.87
  6. Step 6: Final answer
    x = 5,775.41

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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.