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Finding the Fourth Proportional to 6,985.71, 10,477.98 and 2,820.69

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Solution

The fourth proportional to 6,985.71, 10,477.98 and 2,820.69 is: 4,230.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,985.71 : 10,477.98 = 2,820.69 : x
  2. Step 2: Convert to fraction form
    6,985.71/10,477.98 = 2,820.69/x
  3. Step 3: Cross multiply
    6,985.71x = 10,477.98 × 2,820.69
  4. Step 4: Simplify right side
    6,985.71x = 29,555,133.41
  5. Step 5: Solve for x
    x = 29,555,133.41/6,985.71
  6. Step 6: Final answer
    x = 4,230.80

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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.