Home / 1,621.34-2,435.30-1,430.66

Finding the Fourth Proportional to 1,621.34, 2,435.30 and 1,430.66

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Solution

The fourth proportional to 1,621.34, 2,435.30 and 1,430.66 is: 2,148.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.34 : 2,435.30 = 1,430.66 : x
  2. Step 2: Convert to fraction form
    1,621.34/2,435.30 = 1,430.66/x
  3. Step 3: Cross multiply
    1,621.34x = 2,435.30 × 1,430.66
  4. Step 4: Simplify right side
    1,621.34x = 3,484,077.70
  5. Step 5: Solve for x
    x = 3,484,077.70/1,621.34
  6. Step 6: Final answer
    x = 2,148.89

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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.