Home / 1,525.02-2,104.60-861.90

Finding the Fourth Proportional to 1,525.02, 2,104.60 and 861.90

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Solution

The fourth proportional to 1,525.02, 2,104.60 and 861.90 is: 1,189.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,525.02 : 2,104.60 = 861.90 : x
  2. Step 2: Convert to fraction form
    1,525.02/2,104.60 = 861.90/x
  3. Step 3: Cross multiply
    1,525.02x = 2,104.60 × 861.90
  4. Step 4: Simplify right side
    1,525.02x = 1,813,954.74
  5. Step 5: Solve for x
    x = 1,813,954.74/1,525.02
  6. Step 6: Final answer
    x = 1,189.46

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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.