Home / 9,390.05-12,957.75-5,140.28

Finding the Fourth Proportional to 9,390.05, 12,957.75 and 5,140.28

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Solution

The fourth proportional to 9,390.05, 12,957.75 and 5,140.28 is: 7,093.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,390.05 : 12,957.75 = 5,140.28 : x
  2. Step 2: Convert to fraction form
    9,390.05/12,957.75 = 5,140.28/x
  3. Step 3: Cross multiply
    9,390.05x = 12,957.75 × 5,140.28
  4. Step 4: Simplify right side
    9,390.05x = 66,606,398.38
  5. Step 5: Solve for x
    x = 66,606,398.38/9,390.05
  6. Step 6: Final answer
    x = 7,093.30

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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.