Home / 7,875.07-11,812.61-5,402.39

Finding the Fourth Proportional to 7,875.07, 11,812.61 and 5,402.39

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Solution

The fourth proportional to 7,875.07, 11,812.61 and 5,402.39 is: 8,103.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,875.07 : 11,812.61 = 5,402.39 : x
  2. Step 2: Convert to fraction form
    7,875.07/11,812.61 = 5,402.39/x
  3. Step 3: Cross multiply
    7,875.07x = 11,812.61 × 5,402.39
  4. Step 4: Simplify right side
    7,875.07x = 63,816,328.66
  5. Step 5: Solve for x
    x = 63,816,328.66/7,875.07
  6. Step 6: Final answer
    x = 8,103.59

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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.