Home / 4,638.40-6,991.68-4,370.72

Finding the Fourth Proportional to 4,638.40, 6,991.68 and 4,370.72

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Solution

The fourth proportional to 4,638.40, 6,991.68 and 4,370.72 is: 6,588.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,638.40 : 6,991.68 = 4,370.72 : x
  2. Step 2: Convert to fraction form
    4,638.40/6,991.68 = 4,370.72/x
  3. Step 3: Cross multiply
    4,638.40x = 6,991.68 × 4,370.72
  4. Step 4: Simplify right side
    4,638.40x = 30,558,675.61
  5. Step 5: Solve for x
    x = 30,558,675.61/4,638.40
  6. Step 6: Final answer
    x = 6,588.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.