Home / 1,113.48-1,536.60-609.34

Finding the Fourth Proportional to 1,113.48, 1,536.60 and 609.34

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Solution

The fourth proportional to 1,113.48, 1,536.60 and 609.34 is: 840.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,113.48 : 1,536.60 = 609.34 : x
  2. Step 2: Convert to fraction form
    1,113.48/1,536.60 = 609.34/x
  3. Step 3: Cross multiply
    1,113.48x = 1,536.60 × 609.34
  4. Step 4: Simplify right side
    1,113.48x = 936,311.84
  5. Step 5: Solve for x
    x = 936,311.84/1,113.48
  6. Step 6: Final answer
    x = 840.89

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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.