Home / 4,985.28-6,875.60-3,639.38

Finding the Fourth Proportional to 4,985.28, 6,875.60 and 3,639.38

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Solution

The fourth proportional to 4,985.28, 6,875.60 and 3,639.38 is: 5,019.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985.28 : 6,875.60 = 3,639.38 : x
  2. Step 2: Convert to fraction form
    4,985.28/6,875.60 = 3,639.38/x
  3. Step 3: Cross multiply
    4,985.28x = 6,875.60 × 3,639.38
  4. Step 4: Simplify right side
    4,985.28x = 25,022,868.55
  5. Step 5: Solve for x
    x = 25,022,868.55/4,985.28
  6. Step 6: Final answer
    x = 5,019.35

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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.