Home / 1,434.23-2,151.56-612.50

Finding the Fourth Proportional to 1,434.23, 2,151.56 and 612.50

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Solution

The fourth proportional to 1,434.23, 2,151.56 and 612.50 is: 918.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434.23 : 2,151.56 = 612.50 : x
  2. Step 2: Convert to fraction form
    1,434.23/2,151.56 = 612.50/x
  3. Step 3: Cross multiply
    1,434.23x = 2,151.56 × 612.50
  4. Step 4: Simplify right side
    1,434.23x = 1,317,830.50
  5. Step 5: Solve for x
    x = 1,317,830.50/1,434.23
  6. Step 6: Final answer
    x = 918.84

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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.