Home / 5,335.90-8,005.05-1,638.30

Finding the Fourth Proportional to 5,335.90, 8,005.05 and 1,638.30

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Solution

The fourth proportional to 5,335.90, 8,005.05 and 1,638.30 is: 2,457.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,335.90 : 8,005.05 = 1,638.30 : x
  2. Step 2: Convert to fraction form
    5,335.90/8,005.05 = 1,638.30/x
  3. Step 3: Cross multiply
    5,335.90x = 8,005.05 × 1,638.30
  4. Step 4: Simplify right side
    5,335.90x = 13,114,673.42
  5. Step 5: Solve for x
    x = 13,114,673.42/5,335.90
  6. Step 6: Final answer
    x = 2,457.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.