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Finding the Fourth Proportional to 4,645.55, 6,407.91 and 2,965.21

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Solution

The fourth proportional to 4,645.55, 6,407.91 and 2,965.21 is: 4,090.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,645.55 : 6,407.91 = 2,965.21 : x
  2. Step 2: Convert to fraction form
    4,645.55/6,407.91 = 2,965.21/x
  3. Step 3: Cross multiply
    4,645.55x = 6,407.91 × 2,965.21
  4. Step 4: Simplify right side
    4,645.55x = 19,000,782.79
  5. Step 5: Solve for x
    x = 19,000,782.79/4,645.55
  6. Step 6: Final answer
    x = 4,090.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.