Home / 7,137.50-10,706.39-1,943.51

Finding the Fourth Proportional to 7,137.50, 10,706.39 and 1,943.51

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Solution

The fourth proportional to 7,137.50, 10,706.39 and 1,943.51 is: 2,915.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,137.50 : 10,706.39 = 1,943.51 : x
  2. Step 2: Convert to fraction form
    7,137.50/10,706.39 = 1,943.51/x
  3. Step 3: Cross multiply
    7,137.50x = 10,706.39 × 1,943.51
  4. Step 4: Simplify right side
    7,137.50x = 20,807,966.31
  5. Step 5: Solve for x
    x = 20,807,966.31/7,137.50
  6. Step 6: Final answer
    x = 2,915.30

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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.