Home / 3,123.29-4,312.62-1,930.01

Finding the Fourth Proportional to 3,123.29, 4,312.62 and 1,930.01

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Solution

The fourth proportional to 3,123.29, 4,312.62 and 1,930.01 is: 2,664.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.29 : 4,312.62 = 1,930.01 : x
  2. Step 2: Convert to fraction form
    3,123.29/4,312.62 = 1,930.01/x
  3. Step 3: Cross multiply
    3,123.29x = 4,312.62 × 1,930.01
  4. Step 4: Simplify right side
    3,123.29x = 8,323,373.34
  5. Step 5: Solve for x
    x = 8,323,373.34/3,123.29
  6. Step 6: Final answer
    x = 2,664.94

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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.