Home / 3,123.56-4,303.95-2,127.08

Finding the Fourth Proportional to 3,123.56, 4,303.95 and 2,127.08

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Solution

The fourth proportional to 3,123.56, 4,303.95 and 2,127.08 is: 2,930.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.56 : 4,303.95 = 2,127.08 : x
  2. Step 2: Convert to fraction form
    3,123.56/4,303.95 = 2,127.08/x
  3. Step 3: Cross multiply
    3,123.56x = 4,303.95 × 2,127.08
  4. Step 4: Simplify right side
    3,123.56x = 9,154,845.97
  5. Step 5: Solve for x
    x = 9,154,845.97/3,123.56
  6. Step 6: Final answer
    x = 2,930.90

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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.