Home / 7,120.40-10,681.68-4,200.08

Finding the Fourth Proportional to 7,120.40, 10,681.68 and 4,200.08

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Solution

The fourth proportional to 7,120.40, 10,681.68 and 4,200.08 is: 6,300.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,120.40 : 10,681.68 = 4,200.08 : x
  2. Step 2: Convert to fraction form
    7,120.40/10,681.68 = 4,200.08/x
  3. Step 3: Cross multiply
    7,120.40x = 10,681.68 × 4,200.08
  4. Step 4: Simplify right side
    7,120.40x = 44,863,910.53
  5. Step 5: Solve for x
    x = 44,863,910.53/7,120.40
  6. Step 6: Final answer
    x = 6,300.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.