Home / 7,021.32-10,532.04-3,125.40

Finding the Fourth Proportional to 7,021.32, 10,532.04 and 3,125.40

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Solution

The fourth proportional to 7,021.32, 10,532.04 and 3,125.40 is: 4,688.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,021.32 : 10,532.04 = 3,125.40 : x
  2. Step 2: Convert to fraction form
    7,021.32/10,532.04 = 3,125.40/x
  3. Step 3: Cross multiply
    7,021.32x = 10,532.04 × 3,125.40
  4. Step 4: Simplify right side
    7,021.32x = 32,916,837.82
  5. Step 5: Solve for x
    x = 32,916,837.82/7,021.32
  6. Step 6: Final answer
    x = 4,688.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.