Home / 1,330.08-1,985.40-1,244.64

Finding the Fourth Proportional to 1,330.08, 1,985.40 and 1,244.64

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Solution

The fourth proportional to 1,330.08, 1,985.40 and 1,244.64 is: 1,857.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330.08 : 1,985.40 = 1,244.64 : x
  2. Step 2: Convert to fraction form
    1,330.08/1,985.40 = 1,244.64/x
  3. Step 3: Cross multiply
    1,330.08x = 1,985.40 × 1,244.64
  4. Step 4: Simplify right side
    1,330.08x = 2,471,108.26
  5. Step 5: Solve for x
    x = 2,471,108.26/1,330.08
  6. Step 6: Final answer
    x = 1,857.86

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.