Home / 9,389.13-12,959.88-5,412.90

Finding the Fourth Proportional to 9,389.13, 12,959.88 and 5,412.90

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Solution

The fourth proportional to 9,389.13, 12,959.88 and 5,412.90 is: 7,471.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,389.13 : 12,959.88 = 5,412.90 : x
  2. Step 2: Convert to fraction form
    9,389.13/12,959.88 = 5,412.90/x
  3. Step 3: Cross multiply
    9,389.13x = 12,959.88 × 5,412.90
  4. Step 4: Simplify right side
    9,389.13x = 70,150,534.45
  5. Step 5: Solve for x
    x = 70,150,534.45/9,389.13
  6. Step 6: Final answer
    x = 7,471.46

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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.