Home / 8,964.35-12,365.76-5,378.36

Finding the Fourth Proportional to 8,964.35, 12,365.76 and 5,378.36

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Solution

The fourth proportional to 8,964.35, 12,365.76 and 5,378.36 is: 7,419.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,964.35 : 12,365.76 = 5,378.36 : x
  2. Step 2: Convert to fraction form
    8,964.35/12,365.76 = 5,378.36/x
  3. Step 3: Cross multiply
    8,964.35x = 12,365.76 × 5,378.36
  4. Step 4: Simplify right side
    8,964.35x = 66,507,420.23
  5. Step 5: Solve for x
    x = 66,507,420.23/8,964.35
  6. Step 6: Final answer
    x = 7,419.10

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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.