Home / 5,709.60-8,560.70-2,421.80

Finding the Fourth Proportional to 5,709.60, 8,560.70 and 2,421.80

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Solution

The fourth proportional to 5,709.60, 8,560.70 and 2,421.80 is: 3,631.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,709.60 : 8,560.70 = 2,421.80 : x
  2. Step 2: Convert to fraction form
    5,709.60/8,560.70 = 2,421.80/x
  3. Step 3: Cross multiply
    5,709.60x = 8,560.70 × 2,421.80
  4. Step 4: Simplify right side
    5,709.60x = 20,732,303.26
  5. Step 5: Solve for x
    x = 20,732,303.26/5,709.60
  6. Step 6: Final answer
    x = 3,631.13

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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.