Home / 5,515.86-8,274.06-1,620.30

Finding the Fourth Proportional to 5,515.86, 8,274.06 and 1,620.30

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Solution

The fourth proportional to 5,515.86, 8,274.06 and 1,620.30 is: 2,430.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.86 : 8,274.06 = 1,620.30 : x
  2. Step 2: Convert to fraction form
    5,515.86/8,274.06 = 1,620.30/x
  3. Step 3: Cross multiply
    5,515.86x = 8,274.06 × 1,620.30
  4. Step 4: Simplify right side
    5,515.86x = 13,406,459.42
  5. Step 5: Solve for x
    x = 13,406,459.42/5,515.86
  6. Step 6: Final answer
    x = 2,430.53

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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.