Home / 6,885.90-10,316.70-4,285.80

Finding the Fourth Proportional to 6,885.90, 10,316.70 and 4,285.80

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Solution

The fourth proportional to 6,885.90, 10,316.70 and 4,285.80 is: 6,421.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,885.90 : 10,316.70 = 4,285.80 : x
  2. Step 2: Convert to fraction form
    6,885.90/10,316.70 = 4,285.80/x
  3. Step 3: Cross multiply
    6,885.90x = 10,316.70 × 4,285.80
  4. Step 4: Simplify right side
    6,885.90x = 44,215,312.86
  5. Step 5: Solve for x
    x = 44,215,312.86/6,885.90
  6. Step 6: Final answer
    x = 6,421.14

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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.