Home / 9,388.51-12,955.95-5,409.38

Finding the Fourth Proportional to 9,388.51, 12,955.95 and 5,409.38

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Solution

The fourth proportional to 9,388.51, 12,955.95 and 5,409.38 is: 7,464.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,388.51 : 12,955.95 = 5,409.38 : x
  2. Step 2: Convert to fraction form
    9,388.51/12,955.95 = 5,409.38/x
  3. Step 3: Cross multiply
    9,388.51x = 12,955.95 × 5,409.38
  4. Step 4: Simplify right side
    9,388.51x = 70,083,689.20
  5. Step 5: Solve for x
    x = 70,083,689.20/9,388.51
  6. Step 6: Final answer
    x = 7,464.84

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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.