Home / 3,892.10-5,368.74-2,378.96

Finding the Fourth Proportional to 3,892.10, 5,368.74 and 2,378.96

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Solution

The fourth proportional to 3,892.10, 5,368.74 and 2,378.96 is: 3,281.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,892.10 : 5,368.74 = 2,378.96 : x
  2. Step 2: Convert to fraction form
    3,892.10/5,368.74 = 2,378.96/x
  3. Step 3: Cross multiply
    3,892.10x = 5,368.74 × 2,378.96
  4. Step 4: Simplify right side
    3,892.10x = 12,772,017.71
  5. Step 5: Solve for x
    x = 12,772,017.71/3,892.10
  6. Step 6: Final answer
    x = 3,281.52

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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.