Home / 1,112.16-1,534.26-669.30

Finding the Fourth Proportional to 1,112.16, 1,534.26 and 669.30

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Solution

The fourth proportional to 1,112.16, 1,534.26 and 669.30 is: 923.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112.16 : 1,534.26 = 669.30 : x
  2. Step 2: Convert to fraction form
    1,112.16/1,534.26 = 669.30/x
  3. Step 3: Cross multiply
    1,112.16x = 1,534.26 × 669.30
  4. Step 4: Simplify right side
    1,112.16x = 1,026,880.22
  5. Step 5: Solve for x
    x = 1,026,880.22/1,112.16
  6. Step 6: Final answer
    x = 923.32

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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.