Home / 10,185.51-15,278.27-2,790.03

Finding the Fourth Proportional to 10,185.51, 15,278.27 and 2,790.03

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Solution

The fourth proportional to 10,185.51, 15,278.27 and 2,790.03 is: 4,185.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,185.51 : 15,278.27 = 2,790.03 : x
  2. Step 2: Convert to fraction form
    10,185.51/15,278.27 = 2,790.03/x
  3. Step 3: Cross multiply
    10,185.51x = 15,278.27 × 2,790.03
  4. Step 4: Simplify right side
    10,185.51x = 42,626,838.62
  5. Step 5: Solve for x
    x = 42,626,838.62/10,185.51
  6. Step 6: Final answer
    x = 4,185.05

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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.