Home / 1,102.02-1,521.72-804.95

Finding the Fourth Proportional to 1,102.02, 1,521.72 and 804.95

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Solution

The fourth proportional to 1,102.02, 1,521.72 and 804.95 is: 1,111.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,102.02 : 1,521.72 = 804.95 : x
  2. Step 2: Convert to fraction form
    1,102.02/1,521.72 = 804.95/x
  3. Step 3: Cross multiply
    1,102.02x = 1,521.72 × 804.95
  4. Step 4: Simplify right side
    1,102.02x = 1,224,915.17
  5. Step 5: Solve for x
    x = 1,224,915.17/1,102.02
  6. Step 6: Final answer
    x = 1,111.52

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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.