Home / 7,051.31-9,730.81-4,218.80

Finding the Fourth Proportional to 7,051.31, 9,730.81 and 4,218.80

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Solution

The fourth proportional to 7,051.31, 9,730.81 and 4,218.80 is: 5,821.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,051.31 : 9,730.81 = 4,218.80 : x
  2. Step 2: Convert to fraction form
    7,051.31/9,730.81 = 4,218.80/x
  3. Step 3: Cross multiply
    7,051.31x = 9,730.81 × 4,218.80
  4. Step 4: Simplify right side
    7,051.31x = 41,052,341.23
  5. Step 5: Solve for x
    x = 41,052,341.23/7,051.31
  6. Step 6: Final answer
    x = 5,821.95

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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.