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Finding the Fourth Proportional to 7,101.81, 9,800.19 and 4,118.58

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Solution

The fourth proportional to 7,101.81, 9,800.19 and 4,118.58 is: 5,683.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,101.81 : 9,800.19 = 4,118.58 : x
  2. Step 2: Convert to fraction form
    7,101.81/9,800.19 = 4,118.58/x
  3. Step 3: Cross multiply
    7,101.81x = 9,800.19 × 4,118.58
  4. Step 4: Simplify right side
    7,101.81x = 40,362,866.53
  5. Step 5: Solve for x
    x = 40,362,866.53/7,101.81
  6. Step 6: Final answer
    x = 5,683.46

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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.