Home / 7,127.45-10,685.40-2,970.59

Finding the Fourth Proportional to 7,127.45, 10,685.40 and 2,970.59

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Solution

The fourth proportional to 7,127.45, 10,685.40 and 2,970.59 is: 4,453.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,127.45 : 10,685.40 = 2,970.59 : x
  2. Step 2: Convert to fraction form
    7,127.45/10,685.40 = 2,970.59/x
  3. Step 3: Cross multiply
    7,127.45x = 10,685.40 × 2,970.59
  4. Step 4: Simplify right side
    7,127.45x = 31,741,888.96
  5. Step 5: Solve for x
    x = 31,741,888.96/7,127.45
  6. Step 6: Final answer
    x = 4,453.47

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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.