Home / 1,890.08-2,607.32-1,123.11

Finding the Fourth Proportional to 1,890.08, 2,607.32 and 1,123.11

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Solution

The fourth proportional to 1,890.08, 2,607.32 and 1,123.11 is: 1,549.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.08 : 2,607.32 = 1,123.11 : x
  2. Step 2: Convert to fraction form
    1,890.08/2,607.32 = 1,123.11/x
  3. Step 3: Cross multiply
    1,890.08x = 2,607.32 × 1,123.11
  4. Step 4: Simplify right side
    1,890.08x = 2,928,308.90
  5. Step 5: Solve for x
    x = 2,928,308.90/1,890.08
  6. Step 6: Final answer
    x = 1,549.30

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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.