Home / 7,806.20-10,764.50-6,690.84

Finding the Fourth Proportional to 7,806.20, 10,764.50 and 6,690.84

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Solution

The fourth proportional to 7,806.20, 10,764.50 and 6,690.84 is: 9,226.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,806.20 : 10,764.50 = 6,690.84 : x
  2. Step 2: Convert to fraction form
    7,806.20/10,764.50 = 6,690.84/x
  3. Step 3: Cross multiply
    7,806.20x = 10,764.50 × 6,690.84
  4. Step 4: Simplify right side
    7,806.20x = 72,023,547.18
  5. Step 5: Solve for x
    x = 72,023,547.18/7,806.20
  6. Step 6: Final answer
    x = 9,226.45

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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.