Home / 7,145.58-10,705.41-6,990.06

Finding the Fourth Proportional to 7,145.58, 10,705.41 and 6,990.06

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Solution

The fourth proportional to 7,145.58, 10,705.41 and 6,990.06 is: 10,472.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,145.58 : 10,705.41 = 6,990.06 : x
  2. Step 2: Convert to fraction form
    7,145.58/10,705.41 = 6,990.06/x
  3. Step 3: Cross multiply
    7,145.58x = 10,705.41 × 6,990.06
  4. Step 4: Simplify right side
    7,145.58x = 74,831,458.22
  5. Step 5: Solve for x
    x = 74,831,458.22/7,145.58
  6. Step 6: Final answer
    x = 10,472.41

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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.