Home / 5,401.40-8,102.10-4,307.90

Finding the Fourth Proportional to 5,401.40, 8,102.10 and 4,307.90

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Solution

The fourth proportional to 5,401.40, 8,102.10 and 4,307.90 is: 6,461.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,401.40 : 8,102.10 = 4,307.90 : x
  2. Step 2: Convert to fraction form
    5,401.40/8,102.10 = 4,307.90/x
  3. Step 3: Cross multiply
    5,401.40x = 8,102.10 × 4,307.90
  4. Step 4: Simplify right side
    5,401.40x = 34,903,036.59
  5. Step 5: Solve for x
    x = 34,903,036.59/5,401.40
  6. Step 6: Final answer
    x = 6,461.85

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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.