Home / 8,921.19-13,381.76-5,246.81

Finding the Fourth Proportional to 8,921.19, 13,381.76 and 5,246.81

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Solution

The fourth proportional to 8,921.19, 13,381.76 and 5,246.81 is: 7,870.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.19 : 13,381.76 = 5,246.81 : x
  2. Step 2: Convert to fraction form
    8,921.19/13,381.76 = 5,246.81/x
  3. Step 3: Cross multiply
    8,921.19x = 13,381.76 × 5,246.81
  4. Step 4: Simplify right side
    8,921.19x = 70,211,459.04
  5. Step 5: Solve for x
    x = 70,211,459.04/8,921.19
  6. Step 6: Final answer
    x = 7,870.19

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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.