Home / 3,870.79-5,341.65-2,192.16

Finding the Fourth Proportional to 3,870.79, 5,341.65 and 2,192.16

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Solution

The fourth proportional to 3,870.79, 5,341.65 and 2,192.16 is: 3,025.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,870.79 : 5,341.65 = 2,192.16 : x
  2. Step 2: Convert to fraction form
    3,870.79/5,341.65 = 2,192.16/x
  3. Step 3: Cross multiply
    3,870.79x = 5,341.65 × 2,192.16
  4. Step 4: Simplify right side
    3,870.79x = 11,709,763.27
  5. Step 5: Solve for x
    x = 11,709,763.27/3,870.79
  6. Step 6: Final answer
    x = 3,025.16

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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.