Home / 4,909.23-7,365.87-1,986.78

Finding the Fourth Proportional to 4,909.23, 7,365.87 and 1,986.78

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Solution

The fourth proportional to 4,909.23, 7,365.87 and 1,986.78 is: 2,980.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,909.23 : 7,365.87 = 1,986.78 : x
  2. Step 2: Convert to fraction form
    4,909.23/7,365.87 = 1,986.78/x
  3. Step 3: Cross multiply
    4,909.23x = 7,365.87 × 1,986.78
  4. Step 4: Simplify right side
    4,909.23x = 14,634,363.20
  5. Step 5: Solve for x
    x = 14,634,363.20/4,909.23
  6. Step 6: Final answer
    x = 2,980.99

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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.