Home / 7,243.21-9,995.35-4,099.40

Finding the Fourth Proportional to 7,243.21, 9,995.35 and 4,099.40

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Solution

The fourth proportional to 7,243.21, 9,995.35 and 4,099.40 is: 5,657.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,243.21 : 9,995.35 = 4,099.40 : x
  2. Step 2: Convert to fraction form
    7,243.21/9,995.35 = 4,099.40/x
  3. Step 3: Cross multiply
    7,243.21x = 9,995.35 × 4,099.40
  4. Step 4: Simplify right side
    7,243.21x = 40,974,937.79
  5. Step 5: Solve for x
    x = 40,974,937.79/7,243.21
  6. Step 6: Final answer
    x = 5,657.01

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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.