Home / 6,312.08-8,711.99-4,187.76

Finding the Fourth Proportional to 6,312.08, 8,711.99 and 4,187.76

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Solution

The fourth proportional to 6,312.08, 8,711.99 and 4,187.76 is: 5,779.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,312.08 : 8,711.99 = 4,187.76 : x
  2. Step 2: Convert to fraction form
    6,312.08/8,711.99 = 4,187.76/x
  3. Step 3: Cross multiply
    6,312.08x = 8,711.99 × 4,187.76
  4. Step 4: Simplify right side
    6,312.08x = 36,483,723.24
  5. Step 5: Solve for x
    x = 36,483,723.24/6,312.08
  6. Step 6: Final answer
    x = 5,779.98

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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.