Home / 1,539.44-2,123.70-1,008.32

Finding the Fourth Proportional to 1,539.44, 2,123.70 and 1,008.32

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Solution

The fourth proportional to 1,539.44, 2,123.70 and 1,008.32 is: 1,391.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.44 : 2,123.70 = 1,008.32 : x
  2. Step 2: Convert to fraction form
    1,539.44/2,123.70 = 1,008.32/x
  3. Step 3: Cross multiply
    1,539.44x = 2,123.70 × 1,008.32
  4. Step 4: Simplify right side
    1,539.44x = 2,141,369.18
  5. Step 5: Solve for x
    x = 2,141,369.18/1,539.44
  6. Step 6: Final answer
    x = 1,391.01

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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.