Home / 4,212.02-6,312.90-2,979.78

Finding the Fourth Proportional to 4,212.02, 6,312.90 and 2,979.78

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Solution

The fourth proportional to 4,212.02, 6,312.90 and 2,979.78 is: 4,466.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,212.02 : 6,312.90 = 2,979.78 : x
  2. Step 2: Convert to fraction form
    4,212.02/6,312.90 = 2,979.78/x
  3. Step 3: Cross multiply
    4,212.02x = 6,312.90 × 2,979.78
  4. Step 4: Simplify right side
    4,212.02x = 18,811,088.01
  5. Step 5: Solve for x
    x = 18,811,088.01/4,212.02
  6. Step 6: Final answer
    x = 4,466.05

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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.