Home / 9,389.36-12,955.20-5,409.56

Finding the Fourth Proportional to 9,389.36, 12,955.20 and 5,409.56

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Solution

The fourth proportional to 9,389.36, 12,955.20 and 5,409.56 is: 7,463.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,389.36 : 12,955.20 = 5,409.56 : x
  2. Step 2: Convert to fraction form
    9,389.36/12,955.20 = 5,409.56/x
  3. Step 3: Cross multiply
    9,389.36x = 12,955.20 × 5,409.56
  4. Step 4: Simplify right side
    9,389.36x = 70,081,931.71
  5. Step 5: Solve for x
    x = 70,081,931.71/9,389.36
  6. Step 6: Final answer
    x = 7,463.97

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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.