Home / 5,113.46-7,056.56-2,990.45

Finding the Fourth Proportional to 5,113.46, 7,056.56 and 2,990.45

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Solution

The fourth proportional to 5,113.46, 7,056.56 and 2,990.45 is: 4,126.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,113.46 : 7,056.56 = 2,990.45 : x
  2. Step 2: Convert to fraction form
    5,113.46/7,056.56 = 2,990.45/x
  3. Step 3: Cross multiply
    5,113.46x = 7,056.56 × 2,990.45
  4. Step 4: Simplify right side
    5,113.46x = 21,102,239.62
  5. Step 5: Solve for x
    x = 21,102,239.62/5,113.46
  6. Step 6: Final answer
    x = 4,126.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.