Home / 7,243.20-10,864.80-4,748.40

Finding the Fourth Proportional to 7,243.20, 10,864.80 and 4,748.40

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Solution

The fourth proportional to 7,243.20, 10,864.80 and 4,748.40 is: 7,122.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,243.20 : 10,864.80 = 4,748.40 : x
  2. Step 2: Convert to fraction form
    7,243.20/10,864.80 = 4,748.40/x
  3. Step 3: Cross multiply
    7,243.20x = 10,864.80 × 4,748.40
  4. Step 4: Simplify right side
    7,243.20x = 51,590,416.32
  5. Step 5: Solve for x
    x = 51,590,416.32/7,243.20
  6. Step 6: Final answer
    x = 7,122.60

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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.