Home / 3,434.40-4,738-2,647.20

Finding the Fourth Proportional to 3,434.40, 4,738 and 2,647.20

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Solution

The fourth proportional to 3,434.40, 4,738 and 2,647.20 is: 3,652.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,434.40 : 4,738 = 2,647.20 : x
  2. Step 2: Convert to fraction form
    3,434.40/4,738 = 2,647.20/x
  3. Step 3: Cross multiply
    3,434.40x = 4,738 × 2,647.20
  4. Step 4: Simplify right side
    3,434.40x = 12,542,433.60
  5. Step 5: Solve for x
    x = 12,542,433.60/3,434.40
  6. Step 6: Final answer
    x = 3,652.00

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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.