Home / 7,014.48-9,679.80-3,870.60

Finding the Fourth Proportional to 7,014.48, 9,679.80 and 3,870.60

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Solution

The fourth proportional to 7,014.48, 9,679.80 and 3,870.60 is: 5,341.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,014.48 : 9,679.80 = 3,870.60 : x
  2. Step 2: Convert to fraction form
    7,014.48/9,679.80 = 3,870.60/x
  3. Step 3: Cross multiply
    7,014.48x = 9,679.80 × 3,870.60
  4. Step 4: Simplify right side
    7,014.48x = 37,466,633.88
  5. Step 5: Solve for x
    x = 37,466,633.88/7,014.48
  6. Step 6: Final answer
    x = 5,341.33

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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.