Home / 9,211.51-12,711.90-5,019.76

Finding the Fourth Proportional to 9,211.51, 12,711.90 and 5,019.76

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Solution

The fourth proportional to 9,211.51, 12,711.90 and 5,019.76 is: 6,927.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,211.51 : 12,711.90 = 5,019.76 : x
  2. Step 2: Convert to fraction form
    9,211.51/12,711.90 = 5,019.76/x
  3. Step 3: Cross multiply
    9,211.51x = 12,711.90 × 5,019.76
  4. Step 4: Simplify right side
    9,211.51x = 63,810,687.14
  5. Step 5: Solve for x
    x = 63,810,687.14/9,211.51
  6. Step 6: Final answer
    x = 6,927.28

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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.