Home / 4,679.78-6,457.93-2,690.30

Finding the Fourth Proportional to 4,679.78, 6,457.93 and 2,690.30

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Solution

The fourth proportional to 4,679.78, 6,457.93 and 2,690.30 is: 3,712.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,679.78 : 6,457.93 = 2,690.30 : x
  2. Step 2: Convert to fraction form
    4,679.78/6,457.93 = 2,690.30/x
  3. Step 3: Cross multiply
    4,679.78x = 6,457.93 × 2,690.30
  4. Step 4: Simplify right side
    4,679.78x = 17,373,778.50
  5. Step 5: Solve for x
    x = 17,373,778.50/4,679.78
  6. Step 6: Final answer
    x = 3,712.52

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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.