Home / 9,428.78-13,011.36-5,237.30

Finding the Fourth Proportional to 9,428.78, 13,011.36 and 5,237.30

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Solution

The fourth proportional to 9,428.78, 13,011.36 and 5,237.30 is: 7,227.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,428.78 : 13,011.36 = 5,237.30 : x
  2. Step 2: Convert to fraction form
    9,428.78/13,011.36 = 5,237.30/x
  3. Step 3: Cross multiply
    9,428.78x = 13,011.36 × 5,237.30
  4. Step 4: Simplify right side
    9,428.78x = 68,144,395.73
  5. Step 5: Solve for x
    x = 68,144,395.73/9,428.78
  6. Step 6: Final answer
    x = 7,227.28

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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.