Home / 2,540.40-3,810.36-1,307.16

Finding the Fourth Proportional to 2,540.40, 3,810.36 and 1,307.16

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Solution

The fourth proportional to 2,540.40, 3,810.36 and 1,307.16 is: 1,960.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,540.40 : 3,810.36 = 1,307.16 : x
  2. Step 2: Convert to fraction form
    2,540.40/3,810.36 = 1,307.16/x
  3. Step 3: Cross multiply
    2,540.40x = 3,810.36 × 1,307.16
  4. Step 4: Simplify right side
    2,540.40x = 4,980,750.18
  5. Step 5: Solve for x
    x = 4,980,750.18/2,540.40
  6. Step 6: Final answer
    x = 1,960.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.