Home / 2,123.61-3,187.44-1,303.49

Finding the Fourth Proportional to 2,123.61, 3,187.44 and 1,303.49

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Solution

The fourth proportional to 2,123.61, 3,187.44 and 1,303.49 is: 1,956.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,123.61 : 3,187.44 = 1,303.49 : x
  2. Step 2: Convert to fraction form
    2,123.61/3,187.44 = 1,303.49/x
  3. Step 3: Cross multiply
    2,123.61x = 3,187.44 × 1,303.49
  4. Step 4: Simplify right side
    2,123.61x = 4,154,780.23
  5. Step 5: Solve for x
    x = 4,154,780.23/2,123.61
  6. Step 6: Final answer
    x = 1,956.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.