Home / 6,420.60-9,581.67-4,951.80

Finding the Fourth Proportional to 6,420.60, 9,581.67 and 4,951.80

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Solution

The fourth proportional to 6,420.60, 9,581.67 and 4,951.80 is: 7,389.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420.60 : 9,581.67 = 4,951.80 : x
  2. Step 2: Convert to fraction form
    6,420.60/9,581.67 = 4,951.80/x
  3. Step 3: Cross multiply
    6,420.60x = 9,581.67 × 4,951.80
  4. Step 4: Simplify right side
    6,420.60x = 47,446,513.51
  5. Step 5: Solve for x
    x = 47,446,513.51/6,420.60
  6. Step 6: Final answer
    x = 7,389.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.