Home / 1,256.02-1,885.25-607.21

Finding the Fourth Proportional to 1,256.02, 1,885.25 and 607.21

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Solution

The fourth proportional to 1,256.02, 1,885.25 and 607.21 is: 911.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,256.02 : 1,885.25 = 607.21 : x
  2. Step 2: Convert to fraction form
    1,256.02/1,885.25 = 607.21/x
  3. Step 3: Cross multiply
    1,256.02x = 1,885.25 × 607.21
  4. Step 4: Simplify right side
    1,256.02x = 1,144,742.65
  5. Step 5: Solve for x
    x = 1,144,742.65/1,256.02
  6. Step 6: Final answer
    x = 911.40

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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.