Home / 1,407.16-2,111.21-792.07

Finding the Fourth Proportional to 1,407.16, 2,111.21 and 792.07

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Solution

The fourth proportional to 1,407.16, 2,111.21 and 792.07 is: 1,188.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,407.16 : 2,111.21 = 792.07 : x
  2. Step 2: Convert to fraction form
    1,407.16/2,111.21 = 792.07/x
  3. Step 3: Cross multiply
    1,407.16x = 2,111.21 × 792.07
  4. Step 4: Simplify right side
    1,407.16x = 1,672,226.10
  5. Step 5: Solve for x
    x = 1,672,226.10/1,407.16
  6. Step 6: Final answer
    x = 1,188.37

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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.