Home / 9,012.36-12,428.88-5,655.48

Finding the Fourth Proportional to 9,012.36, 12,428.88 and 5,655.48

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Solution

The fourth proportional to 9,012.36, 12,428.88 and 5,655.48 is: 7,799.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,012.36 : 12,428.88 = 5,655.48 : x
  2. Step 2: Convert to fraction form
    9,012.36/12,428.88 = 5,655.48/x
  3. Step 3: Cross multiply
    9,012.36x = 12,428.88 × 5,655.48
  4. Step 4: Simplify right side
    9,012.36x = 70,291,282.26
  5. Step 5: Solve for x
    x = 70,291,282.26/9,012.36
  6. Step 6: Final answer
    x = 7,799.43

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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.