Home / 7,875.09-11,812.69-2,031.75

Finding the Fourth Proportional to 7,875.09, 11,812.69 and 2,031.75

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Solution

The fourth proportional to 7,875.09, 11,812.69 and 2,031.75 is: 3,047.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,875.09 : 11,812.69 = 2,031.75 : x
  2. Step 2: Convert to fraction form
    7,875.09/11,812.69 = 2,031.75/x
  3. Step 3: Cross multiply
    7,875.09x = 11,812.69 × 2,031.75
  4. Step 4: Simplify right side
    7,875.09x = 24,000,479.74
  5. Step 5: Solve for x
    x = 24,000,479.74/7,875.09
  6. Step 6: Final answer
    x = 3,047.64

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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.