Home / 1,780.02-2,453.49-1,190.34

Finding the Fourth Proportional to 1,780.02, 2,453.49 and 1,190.34

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Solution

The fourth proportional to 1,780.02, 2,453.49 and 1,190.34 is: 1,640.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,780.02 : 2,453.49 = 1,190.34 : x
  2. Step 2: Convert to fraction form
    1,780.02/2,453.49 = 1,190.34/x
  3. Step 3: Cross multiply
    1,780.02x = 2,453.49 × 1,190.34
  4. Step 4: Simplify right side
    1,780.02x = 2,920,487.29
  5. Step 5: Solve for x
    x = 2,920,487.29/1,780.02
  6. Step 6: Final answer
    x = 1,640.70

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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.