Home / 6,780.81-10,120.38-6,337.94

Finding the Fourth Proportional to 6,780.81, 10,120.38 and 6,337.94

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Solution

The fourth proportional to 6,780.81, 10,120.38 and 6,337.94 is: 9,459.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,780.81 : 10,120.38 = 6,337.94 : x
  2. Step 2: Convert to fraction form
    6,780.81/10,120.38 = 6,337.94/x
  3. Step 3: Cross multiply
    6,780.81x = 10,120.38 × 6,337.94
  4. Step 4: Simplify right side
    6,780.81x = 64,142,361.22
  5. Step 5: Solve for x
    x = 64,142,361.22/6,780.81
  6. Step 6: Final answer
    x = 9,459.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.