Home / 7,822.50-10,800.03-6,981.72

Finding the Fourth Proportional to 7,822.50, 10,800.03 and 6,981.72

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Solution

The fourth proportional to 7,822.50, 10,800.03 and 6,981.72 is: 9,639.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,822.50 : 10,800.03 = 6,981.72 : x
  2. Step 2: Convert to fraction form
    7,822.50/10,800.03 = 6,981.72/x
  3. Step 3: Cross multiply
    7,822.50x = 10,800.03 × 6,981.72
  4. Step 4: Simplify right side
    7,822.50x = 75,402,785.45
  5. Step 5: Solve for x
    x = 75,402,785.45/7,822.50
  6. Step 6: Final answer
    x = 9,639.22

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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.