Home / 7,420.57-11,130.85-6,317.89

Finding the Fourth Proportional to 7,420.57, 11,130.85 and 6,317.89

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Solution

The fourth proportional to 7,420.57, 11,130.85 and 6,317.89 is: 9,476.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,420.57 : 11,130.85 = 6,317.89 : x
  2. Step 2: Convert to fraction form
    7,420.57/11,130.85 = 6,317.89/x
  3. Step 3: Cross multiply
    7,420.57x = 11,130.85 × 6,317.89
  4. Step 4: Simplify right side
    7,420.57x = 70,323,485.91
  5. Step 5: Solve for x
    x = 70,323,485.91/7,420.57
  6. Step 6: Final answer
    x = 9,476.83

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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.