Home / 7,376.72-10,172.20-5,698.40

Finding the Fourth Proportional to 7,376.72, 10,172.20 and 5,698.40

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Solution

The fourth proportional to 7,376.72, 10,172.20 and 5,698.40 is: 7,857.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,376.72 : 10,172.20 = 5,698.40 : x
  2. Step 2: Convert to fraction form
    7,376.72/10,172.20 = 5,698.40/x
  3. Step 3: Cross multiply
    7,376.72x = 10,172.20 × 5,698.40
  4. Step 4: Simplify right side
    7,376.72x = 57,965,264.48
  5. Step 5: Solve for x
    x = 57,965,264.48/7,376.72
  6. Step 6: Final answer
    x = 7,857.86

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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.