Home / 1,038.32-1,556.40-461.60

Finding the Fourth Proportional to 1,038.32, 1,556.40 and 461.60

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Solution

The fourth proportional to 1,038.32, 1,556.40 and 461.60 is: 691.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038.32 : 1,556.40 = 461.60 : x
  2. Step 2: Convert to fraction form
    1,038.32/1,556.40 = 461.60/x
  3. Step 3: Cross multiply
    1,038.32x = 1,556.40 × 461.60
  4. Step 4: Simplify right side
    1,038.32x = 718,434.24
  5. Step 5: Solve for x
    x = 718,434.24/1,038.32
  6. Step 6: Final answer
    x = 691.92

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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.