Home / 1,698.02-2,343.23-990.27

Finding the Fourth Proportional to 1,698.02, 2,343.23 and 990.27

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Solution

The fourth proportional to 1,698.02, 2,343.23 and 990.27 is: 1,366.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,698.02 : 2,343.23 = 990.27 : x
  2. Step 2: Convert to fraction form
    1,698.02/2,343.23 = 990.27/x
  3. Step 3: Cross multiply
    1,698.02x = 2,343.23 × 990.27
  4. Step 4: Simplify right side
    1,698.02x = 2,320,432.85
  5. Step 5: Solve for x
    x = 2,320,432.85/1,698.02
  6. Step 6: Final answer
    x = 1,366.56

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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.