Home / 1,590.18-2,385.30-435.96

Finding the Fourth Proportional to 1,590.18, 2,385.30 and 435.96

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Solution

The fourth proportional to 1,590.18, 2,385.30 and 435.96 is: 653.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,590.18 : 2,385.30 = 435.96 : x
  2. Step 2: Convert to fraction form
    1,590.18/2,385.30 = 435.96/x
  3. Step 3: Cross multiply
    1,590.18x = 2,385.30 × 435.96
  4. Step 4: Simplify right side
    1,590.18x = 1,039,895.39
  5. Step 5: Solve for x
    x = 1,039,895.39/1,590.18
  6. Step 6: Final answer
    x = 653.95

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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.