Home / 7,117.68-9,822.84-3,974.07

Finding the Fourth Proportional to 7,117.68, 9,822.84 and 3,974.07

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Solution

The fourth proportional to 7,117.68, 9,822.84 and 3,974.07 is: 5,484.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,117.68 : 9,822.84 = 3,974.07 : x
  2. Step 2: Convert to fraction form
    7,117.68/9,822.84 = 3,974.07/x
  3. Step 3: Cross multiply
    7,117.68x = 9,822.84 × 3,974.07
  4. Step 4: Simplify right side
    7,117.68x = 39,036,653.76
  5. Step 5: Solve for x
    x = 39,036,653.76/7,117.68
  6. Step 6: Final answer
    x = 5,484.46

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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.