Home / 3,895.20-5,376.40-2,570.40

Finding the Fourth Proportional to 3,895.20, 5,376.40 and 2,570.40

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Solution

The fourth proportional to 3,895.20, 5,376.40 and 2,570.40 is: 3,547.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,895.20 : 5,376.40 = 2,570.40 : x
  2. Step 2: Convert to fraction form
    3,895.20/5,376.40 = 2,570.40/x
  3. Step 3: Cross multiply
    3,895.20x = 5,376.40 × 2,570.40
  4. Step 4: Simplify right side
    3,895.20x = 13,819,498.56
  5. Step 5: Solve for x
    x = 13,819,498.56/3,895.20
  6. Step 6: Final answer
    x = 3,547.83

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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.