Home / 7,013.94-9,678.99-4,218.90

Finding the Fourth Proportional to 7,013.94, 9,678.99 and 4,218.90

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Solution

The fourth proportional to 7,013.94, 9,678.99 and 4,218.90 is: 5,821.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,013.94 : 9,678.99 = 4,218.90 : x
  2. Step 2: Convert to fraction form
    7,013.94/9,678.99 = 4,218.90/x
  3. Step 3: Cross multiply
    7,013.94x = 9,678.99 × 4,218.90
  4. Step 4: Simplify right side
    7,013.94x = 40,834,690.91
  5. Step 5: Solve for x
    x = 40,834,690.91/7,013.94
  6. Step 6: Final answer
    x = 5,821.93

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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.