Home / 2,430.87-3,354.51-1,436.19

Finding the Fourth Proportional to 2,430.87, 3,354.51 and 1,436.19

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Solution

The fourth proportional to 2,430.87, 3,354.51 and 1,436.19 is: 1,981.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,430.87 : 3,354.51 = 1,436.19 : x
  2. Step 2: Convert to fraction form
    2,430.87/3,354.51 = 1,436.19/x
  3. Step 3: Cross multiply
    2,430.87x = 3,354.51 × 1,436.19
  4. Step 4: Simplify right side
    2,430.87x = 4,817,713.72
  5. Step 5: Solve for x
    x = 4,817,713.72/2,430.87
  6. Step 6: Final answer
    x = 1,981.89

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Half scale
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Double scale
Find fourth proportional to 2,431.87, 3,355.89 and 1,437.19
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1.5x scale

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.