Home / 1,990.29-2,743.77-1,430.58

Finding the Fourth Proportional to 1,990.29, 2,743.77 and 1,430.58

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Solution

The fourth proportional to 1,990.29, 2,743.77 and 1,430.58 is: 1,972.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.29 : 2,743.77 = 1,430.58 : x
  2. Step 2: Convert to fraction form
    1,990.29/2,743.77 = 1,430.58/x
  3. Step 3: Cross multiply
    1,990.29x = 2,743.77 × 1,430.58
  4. Step 4: Simplify right side
    1,990.29x = 3,925,182.49
  5. Step 5: Solve for x
    x = 3,925,182.49/1,990.29
  6. Step 6: Final answer
    x = 1,972.17

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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.