Home / 1,460.42-2,190.30-420.19

Finding the Fourth Proportional to 1,460.42, 2,190.30 and 420.19

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Solution

The fourth proportional to 1,460.42, 2,190.30 and 420.19 is: 630.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,460.42 : 2,190.30 = 420.19 : x
  2. Step 2: Convert to fraction form
    1,460.42/2,190.30 = 420.19/x
  3. Step 3: Cross multiply
    1,460.42x = 2,190.30 × 420.19
  4. Step 4: Simplify right side
    1,460.42x = 920,336.29
  5. Step 5: Solve for x
    x = 920,336.29/1,460.42
  6. Step 6: Final answer
    x = 630.19

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Double scale
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1.5x scale

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.