Home / 1,308.40-1,962.85-577.96

Finding the Fourth Proportional to 1,308.40, 1,962.85 and 577.96

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Solution

The fourth proportional to 1,308.40, 1,962.85 and 577.96 is: 867.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308.40 : 1,962.85 = 577.96 : x
  2. Step 2: Convert to fraction form
    1,308.40/1,962.85 = 577.96/x
  3. Step 3: Cross multiply
    1,308.40x = 1,962.85 × 577.96
  4. Step 4: Simplify right side
    1,308.40x = 1,134,448.79
  5. Step 5: Solve for x
    x = 1,134,448.79/1,308.40
  6. Step 6: Final answer
    x = 867.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.