Home / 1,342.16-1,852.26-845.12

Finding the Fourth Proportional to 1,342.16, 1,852.26 and 845.12

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Solution

The fourth proportional to 1,342.16, 1,852.26 and 845.12 is: 1,166.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,342.16 : 1,852.26 = 845.12 : x
  2. Step 2: Convert to fraction form
    1,342.16/1,852.26 = 845.12/x
  3. Step 3: Cross multiply
    1,342.16x = 1,852.26 × 845.12
  4. Step 4: Simplify right side
    1,342.16x = 1,565,381.97
  5. Step 5: Solve for x
    x = 1,565,381.97/1,342.16
  6. Step 6: Final answer
    x = 1,166.32

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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.