Home / 6,897.36-9,515.40-4,243.80

Finding the Fourth Proportional to 6,897.36, 9,515.40 and 4,243.80

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Solution

The fourth proportional to 6,897.36, 9,515.40 and 4,243.80 is: 5,854.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,897.36 : 9,515.40 = 4,243.80 : x
  2. Step 2: Convert to fraction form
    6,897.36/9,515.40 = 4,243.80/x
  3. Step 3: Cross multiply
    6,897.36x = 9,515.40 × 4,243.80
  4. Step 4: Simplify right side
    6,897.36x = 40,381,454.52
  5. Step 5: Solve for x
    x = 40,381,454.52/6,897.36
  6. Step 6: Final answer
    x = 5,854.62

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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.