Home / 1,430.06-2,143.26-608.11

Finding the Fourth Proportional to 1,430.06, 2,143.26 and 608.11

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Solution

The fourth proportional to 1,430.06, 2,143.26 and 608.11 is: 911.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,430.06 : 2,143.26 = 608.11 : x
  2. Step 2: Convert to fraction form
    1,430.06/2,143.26 = 608.11/x
  3. Step 3: Cross multiply
    1,430.06x = 2,143.26 × 608.11
  4. Step 4: Simplify right side
    1,430.06x = 1,303,332.48
  5. Step 5: Solve for x
    x = 1,303,332.48/1,430.06
  6. Step 6: Final answer
    x = 911.39

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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.