Home / 1,785.44-2,458.55-1,490.20

Finding the Fourth Proportional to 1,785.44, 2,458.55 and 1,490.20

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Solution

The fourth proportional to 1,785.44, 2,458.55 and 1,490.20 is: 2,052.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,785.44 : 2,458.55 = 1,490.20 : x
  2. Step 2: Convert to fraction form
    1,785.44/2,458.55 = 1,490.20/x
  3. Step 3: Cross multiply
    1,785.44x = 2,458.55 × 1,490.20
  4. Step 4: Simplify right side
    1,785.44x = 3,663,728.79
  5. Step 5: Solve for x
    x = 3,663,728.79/1,785.44
  6. Step 6: Final answer
    x = 2,052.00

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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.