Home / 7,640.51-11,461.77-3,480.35

Finding the Fourth Proportional to 7,640.51, 11,461.77 and 3,480.35

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Solution

The fourth proportional to 7,640.51, 11,461.77 and 3,480.35 is: 5,220.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,640.51 : 11,461.77 = 3,480.35 : x
  2. Step 2: Convert to fraction form
    7,640.51/11,461.77 = 3,480.35/x
  3. Step 3: Cross multiply
    7,640.51x = 11,461.77 × 3,480.35
  4. Step 4: Simplify right side
    7,640.51x = 39,890,913.91
  5. Step 5: Solve for x
    x = 39,890,913.91/7,640.51
  6. Step 6: Final answer
    x = 5,220.98

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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.