Home / 7,811.47-10,776.74-4,822.11

Finding the Fourth Proportional to 7,811.47, 10,776.74 and 4,822.11

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Solution

The fourth proportional to 7,811.47, 10,776.74 and 4,822.11 is: 6,652.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.47 : 10,776.74 = 4,822.11 : x
  2. Step 2: Convert to fraction form
    7,811.47/10,776.74 = 4,822.11/x
  3. Step 3: Cross multiply
    7,811.47x = 10,776.74 × 4,822.11
  4. Step 4: Simplify right side
    7,811.47x = 51,966,637.78
  5. Step 5: Solve for x
    x = 51,966,637.78/7,811.47
  6. Step 6: Final answer
    x = 6,652.61

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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.