Home / 3,389.61-4,676.28-2,130.26

Finding the Fourth Proportional to 3,389.61, 4,676.28 and 2,130.26

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Solution

The fourth proportional to 3,389.61, 4,676.28 and 2,130.26 is: 2,938.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,389.61 : 4,676.28 = 2,130.26 : x
  2. Step 2: Convert to fraction form
    3,389.61/4,676.28 = 2,130.26/x
  3. Step 3: Cross multiply
    3,389.61x = 4,676.28 × 2,130.26
  4. Step 4: Simplify right side
    3,389.61x = 9,961,692.23
  5. Step 5: Solve for x
    x = 9,961,692.23/3,389.61
  6. Step 6: Final answer
    x = 2,938.89

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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.