Home / 7,015.76-9,681.34-3,871.94

Finding the Fourth Proportional to 7,015.76, 9,681.34 and 3,871.94

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Solution

The fourth proportional to 7,015.76, 9,681.34 and 3,871.94 is: 5,343.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,015.76 : 9,681.34 = 3,871.94 : x
  2. Step 2: Convert to fraction form
    7,015.76/9,681.34 = 3,871.94/x
  3. Step 3: Cross multiply
    7,015.76x = 9,681.34 × 3,871.94
  4. Step 4: Simplify right side
    7,015.76x = 37,485,567.60
  5. Step 5: Solve for x
    x = 37,485,567.60/7,015.76
  6. Step 6: Final answer
    x = 5,343.05

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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.