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Finding the Fourth Proportional to 7,836.98, 10,818.04 and 5,320.21

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Solution

The fourth proportional to 7,836.98, 10,818.04 and 5,320.21 is: 7,343.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,836.98 : 10,818.04 = 5,320.21 : x
  2. Step 2: Convert to fraction form
    7,836.98/10,818.04 = 5,320.21/x
  3. Step 3: Cross multiply
    7,836.98x = 10,818.04 × 5,320.21
  4. Step 4: Simplify right side
    7,836.98x = 57,554,271.63
  5. Step 5: Solve for x
    x = 57,554,271.63/7,836.98
  6. Step 6: Final answer
    x = 7,343.94

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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.