Home / 7,124.84-10,685.60-1,931.12

Finding the Fourth Proportional to 7,124.84, 10,685.60 and 1,931.12

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Solution

The fourth proportional to 7,124.84, 10,685.60 and 1,931.12 is: 2,896.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,124.84 : 10,685.60 = 1,931.12 : x
  2. Step 2: Convert to fraction form
    7,124.84/10,685.60 = 1,931.12/x
  3. Step 3: Cross multiply
    7,124.84x = 10,685.60 × 1,931.12
  4. Step 4: Simplify right side
    7,124.84x = 20,635,175.87
  5. Step 5: Solve for x
    x = 20,635,175.87/7,124.84
  6. Step 6: Final answer
    x = 2,896.23

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1.5x scale

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.