Home / 4,985.28-6,879.40-2,861.19

Finding the Fourth Proportional to 4,985.28, 6,879.40 and 2,861.19

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Solution

The fourth proportional to 4,985.28, 6,879.40 and 2,861.19 is: 3,948.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985.28 : 6,879.40 = 2,861.19 : x
  2. Step 2: Convert to fraction form
    4,985.28/6,879.40 = 2,861.19/x
  3. Step 3: Cross multiply
    4,985.28x = 6,879.40 × 2,861.19
  4. Step 4: Simplify right side
    4,985.28x = 19,683,263.33
  5. Step 5: Solve for x
    x = 19,683,263.33/4,985.28
  6. Step 6: Final answer
    x = 3,948.28

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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.