Home / 9,399.31-12,970.90-5,150.34

Finding the Fourth Proportional to 9,399.31, 12,970.90 and 5,150.34

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Solution

The fourth proportional to 9,399.31, 12,970.90 and 5,150.34 is: 7,107.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,399.31 : 12,970.90 = 5,150.34 : x
  2. Step 2: Convert to fraction form
    9,399.31/12,970.90 = 5,150.34/x
  3. Step 3: Cross multiply
    9,399.31x = 12,970.90 × 5,150.34
  4. Step 4: Simplify right side
    9,399.31x = 66,804,545.11
  5. Step 5: Solve for x
    x = 66,804,545.11/9,399.31
  6. Step 6: Final answer
    x = 7,107.39

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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.