Home / 8,624.81-12,938.57-2,782.01

Finding the Fourth Proportional to 8,624.81, 12,938.57 and 2,782.01

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Solution

The fourth proportional to 8,624.81, 12,938.57 and 2,782.01 is: 4,173.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,624.81 : 12,938.57 = 2,782.01 : x
  2. Step 2: Convert to fraction form
    8,624.81/12,938.57 = 2,782.01/x
  3. Step 3: Cross multiply
    8,624.81x = 12,938.57 × 2,782.01
  4. Step 4: Simplify right side
    8,624.81x = 35,995,231.13
  5. Step 5: Solve for x
    x = 35,995,231.13/8,624.81
  6. Step 6: Final answer
    x = 4,173.45

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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.