Home / 7,014.06-9,679.41-3,870.21

Finding the Fourth Proportional to 7,014.06, 9,679.41 and 3,870.21

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Solution

The fourth proportional to 7,014.06, 9,679.41 and 3,870.21 is: 5,340.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,014.06 : 9,679.41 = 3,870.21 : x
  2. Step 2: Convert to fraction form
    7,014.06/9,679.41 = 3,870.21/x
  3. Step 3: Cross multiply
    7,014.06x = 9,679.41 × 3,870.21
  4. Step 4: Simplify right side
    7,014.06x = 37,461,349.38
  5. Step 5: Solve for x
    x = 37,461,349.38/7,014.06
  6. Step 6: Final answer
    x = 5,340.89

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Half scale
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Double scale
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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.