Home / 1,407.40-2,111.44-433.52

Finding the Fourth Proportional to 1,407.40, 2,111.44 and 433.52

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Solution

The fourth proportional to 1,407.40, 2,111.44 and 433.52 is: 650.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,407.40 : 2,111.44 = 433.52 : x
  2. Step 2: Convert to fraction form
    1,407.40/2,111.44 = 433.52/x
  3. Step 3: Cross multiply
    1,407.40x = 2,111.44 × 433.52
  4. Step 4: Simplify right side
    1,407.40x = 915,351.47
  5. Step 5: Solve for x
    x = 915,351.47/1,407.40
  6. Step 6: Final answer
    x = 650.38

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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.