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Finding the Fourth Proportional to 6,885.41, 9,484.14 and 5,390.65

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Solution

The fourth proportional to 6,885.41, 9,484.14 and 5,390.65 is: 7,425.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,885.41 : 9,484.14 = 5,390.65 : x
  2. Step 2: Convert to fraction form
    6,885.41/9,484.14 = 5,390.65/x
  3. Step 3: Cross multiply
    6,885.41x = 9,484.14 × 5,390.65
  4. Step 4: Simplify right side
    6,885.41x = 51,125,681.04
  5. Step 5: Solve for x
    x = 51,125,681.04/6,885.41
  6. Step 6: Final answer
    x = 7,425.22

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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.