Home / 7,228.61-9,975.56-4,245.40

Finding the Fourth Proportional to 7,228.61, 9,975.56 and 4,245.40

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Solution

The fourth proportional to 7,228.61, 9,975.56 and 4,245.40 is: 5,858.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,228.61 : 9,975.56 = 4,245.40 : x
  2. Step 2: Convert to fraction form
    7,228.61/9,975.56 = 4,245.40/x
  3. Step 3: Cross multiply
    7,228.61x = 9,975.56 × 4,245.40
  4. Step 4: Simplify right side
    7,228.61x = 42,350,177.55
  5. Step 5: Solve for x
    x = 42,350,177.55/7,228.61
  6. Step 6: Final answer
    x = 5,858.69

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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.