Home / 2,890.49-3,989.45-1,712.24

Finding the Fourth Proportional to 2,890.49, 3,989.45 and 1,712.24

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Solution

The fourth proportional to 2,890.49, 3,989.45 and 1,712.24 is: 2,363.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.49 : 3,989.45 = 1,712.24 : x
  2. Step 2: Convert to fraction form
    2,890.49/3,989.45 = 1,712.24/x
  3. Step 3: Cross multiply
    2,890.49x = 3,989.45 × 1,712.24
  4. Step 4: Simplify right side
    2,890.49x = 6,830,895.16
  5. Step 5: Solve for x
    x = 6,830,895.16/2,890.49
  6. Step 6: Final answer
    x = 2,363.23

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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.