Home / 6,461.80-9,686.77-2,515.70

Finding the Fourth Proportional to 6,461.80, 9,686.77 and 2,515.70

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Solution

The fourth proportional to 6,461.80, 9,686.77 and 2,515.70 is: 3,771.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,461.80 : 9,686.77 = 2,515.70 : x
  2. Step 2: Convert to fraction form
    6,461.80/9,686.77 = 2,515.70/x
  3. Step 3: Cross multiply
    6,461.80x = 9,686.77 × 2,515.70
  4. Step 4: Simplify right side
    6,461.80x = 24,369,025.22
  5. Step 5: Solve for x
    x = 24,369,025.22/6,461.80
  6. Step 6: Final answer
    x = 3,771.25

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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.