Home / 10,440.81-14,409.05-5,725.40

Finding the Fourth Proportional to 10,440.81, 14,409.05 and 5,725.40

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Solution

The fourth proportional to 10,440.81, 14,409.05 and 5,725.40 is: 7,901.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,440.81 : 14,409.05 = 5,725.40 : x
  2. Step 2: Convert to fraction form
    10,440.81/14,409.05 = 5,725.40/x
  3. Step 3: Cross multiply
    10,440.81x = 14,409.05 × 5,725.40
  4. Step 4: Simplify right side
    10,440.81x = 82,497,474.20
  5. Step 5: Solve for x
    x = 82,497,474.20/10,440.81
  6. Step 6: Final answer
    x = 7,901.44

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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.