Home / 1,539.23-2,123.53-948.74

Finding the Fourth Proportional to 1,539.23, 2,123.53 and 948.74

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Solution

The fourth proportional to 1,539.23, 2,123.53 and 948.74 is: 1,308.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.23 : 2,123.53 = 948.74 : x
  2. Step 2: Convert to fraction form
    1,539.23/2,123.53 = 948.74/x
  3. Step 3: Cross multiply
    1,539.23x = 2,123.53 × 948.74
  4. Step 4: Simplify right side
    1,539.23x = 2,014,664.86
  5. Step 5: Solve for x
    x = 2,014,664.86/1,539.23
  6. Step 6: Final answer
    x = 1,308.88

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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.