Home / 1,407.38-2,111.27-433.35

Finding the Fourth Proportional to 1,407.38, 2,111.27 and 433.35

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Solution

The fourth proportional to 1,407.38, 2,111.27 and 433.35 is: 650.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,407.38 : 2,111.27 = 433.35 : x
  2. Step 2: Convert to fraction form
    1,407.38/2,111.27 = 433.35/x
  3. Step 3: Cross multiply
    1,407.38x = 2,111.27 × 433.35
  4. Step 4: Simplify right side
    1,407.38x = 914,916.69
  5. Step 5: Solve for x
    x = 914,916.69/1,407.38
  6. Step 6: Final answer
    x = 650.09

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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.