Home / 1,915.32-2,642.80-1,076.01

Finding the Fourth Proportional to 1,915.32, 2,642.80 and 1,076.01

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Solution

The fourth proportional to 1,915.32, 2,642.80 and 1,076.01 is: 1,484.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915.32 : 2,642.80 = 1,076.01 : x
  2. Step 2: Convert to fraction form
    1,915.32/2,642.80 = 1,076.01/x
  3. Step 3: Cross multiply
    1,915.32x = 2,642.80 × 1,076.01
  4. Step 4: Simplify right side
    1,915.32x = 2,843,679.23
  5. Step 5: Solve for x
    x = 2,843,679.23/1,915.32
  6. Step 6: Final answer
    x = 1,484.70

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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.