Home / 7,014.28-9,679.74-3,870.46

Finding the Fourth Proportional to 7,014.28, 9,679.74 and 3,870.46

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Solution

The fourth proportional to 7,014.28, 9,679.74 and 3,870.46 is: 5,341.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,014.28 : 9,679.74 = 3,870.46 : x
  2. Step 2: Convert to fraction form
    7,014.28/9,679.74 = 3,870.46/x
  3. Step 3: Cross multiply
    7,014.28x = 9,679.74 × 3,870.46
  4. Step 4: Simplify right side
    7,014.28x = 37,465,046.48
  5. Step 5: Solve for x
    x = 37,465,046.48/7,014.28
  6. Step 6: Final answer
    x = 5,341.25

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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.