Home / 7,821.10-10,792.12-6,231.77

Finding the Fourth Proportional to 7,821.10, 10,792.12 and 6,231.77

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Solution

The fourth proportional to 7,821.10, 10,792.12 and 6,231.77 is: 8,599.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,821.10 : 10,792.12 = 6,231.77 : x
  2. Step 2: Convert to fraction form
    7,821.10/10,792.12 = 6,231.77/x
  3. Step 3: Cross multiply
    7,821.10x = 10,792.12 × 6,231.77
  4. Step 4: Simplify right side
    7,821.10x = 67,254,009.65
  5. Step 5: Solve for x
    x = 67,254,009.65/7,821.10
  6. Step 6: Final answer
    x = 8,599.05

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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.