Home / 7,818.40-10,776.72-6,113.92

Finding the Fourth Proportional to 7,818.40, 10,776.72 and 6,113.92

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Solution

The fourth proportional to 7,818.40, 10,776.72 and 6,113.92 is: 8,427.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,818.40 : 10,776.72 = 6,113.92 : x
  2. Step 2: Convert to fraction form
    7,818.40/10,776.72 = 6,113.92/x
  3. Step 3: Cross multiply
    7,818.40x = 10,776.72 × 6,113.92
  4. Step 4: Simplify right side
    7,818.40x = 65,888,003.94
  5. Step 5: Solve for x
    x = 65,888,003.94/7,818.40
  6. Step 6: Final answer
    x = 8,427.30

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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.