Home / 3,123.48-4,309.98-1,864.44

Finding the Fourth Proportional to 3,123.48, 4,309.98 and 1,864.44

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Solution

The fourth proportional to 3,123.48, 4,309.98 and 1,864.44 is: 2,572.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.48 : 4,309.98 = 1,864.44 : x
  2. Step 2: Convert to fraction form
    3,123.48/4,309.98 = 1,864.44/x
  3. Step 3: Cross multiply
    3,123.48x = 4,309.98 × 1,864.44
  4. Step 4: Simplify right side
    3,123.48x = 8,035,699.11
  5. Step 5: Solve for x
    x = 8,035,699.11/3,123.48
  6. Step 6: Final answer
    x = 2,572.68

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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.