Home / 1,433.00-2,139.70-1,283.80

Finding the Fourth Proportional to 1,433.00, 2,139.70 and 1,283.80

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Solution

The fourth proportional to 1,433.00, 2,139.70 and 1,283.80 is: 1,916.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,433.00 : 2,139.70 = 1,283.80 : x
  2. Step 2: Convert to fraction form
    1,433.00/2,139.70 = 1,283.80/x
  3. Step 3: Cross multiply
    1,433.00x = 2,139.70 × 1,283.80
  4. Step 4: Simplify right side
    1,433.00x = 2,746,934.29
  5. Step 5: Solve for x
    x = 2,746,934.29/1,433.00
  6. Step 6: Final answer
    x = 1,916.91

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.