Home / 2,870.49-3,960.34-1,675.21

Finding the Fourth Proportional to 2,870.49, 3,960.34 and 1,675.21

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Solution

The fourth proportional to 2,870.49, 3,960.34 and 1,675.21 is: 2,311.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,870.49 : 3,960.34 = 1,675.21 : x
  2. Step 2: Convert to fraction form
    2,870.49/3,960.34 = 1,675.21/x
  3. Step 3: Cross multiply
    2,870.49x = 3,960.34 × 1,675.21
  4. Step 4: Simplify right side
    2,870.49x = 6,634,401.17
  5. Step 5: Solve for x
    x = 6,634,401.17/2,870.49
  6. Step 6: Final answer
    x = 2,311.24

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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.