Home / 2,071.90-2,860.95-1,376.38

Finding the Fourth Proportional to 2,071.90, 2,860.95 and 1,376.38

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Solution

The fourth proportional to 2,071.90, 2,860.95 and 1,376.38 is: 1,900.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,071.90 : 2,860.95 = 1,376.38 : x
  2. Step 2: Convert to fraction form
    2,071.90/2,860.95 = 1,376.38/x
  3. Step 3: Cross multiply
    2,071.90x = 2,860.95 × 1,376.38
  4. Step 4: Simplify right side
    2,071.90x = 3,937,754.36
  5. Step 5: Solve for x
    x = 3,937,754.36/2,071.90
  6. Step 6: Final answer
    x = 1,900.55

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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.