Home / 1,531.28-2,113.08-941.60

Finding the Fourth Proportional to 1,531.28, 2,113.08 and 941.60

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Solution

The fourth proportional to 1,531.28, 2,113.08 and 941.60 is: 1,299.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,531.28 : 2,113.08 = 941.60 : x
  2. Step 2: Convert to fraction form
    1,531.28/2,113.08 = 941.60/x
  3. Step 3: Cross multiply
    1,531.28x = 2,113.08 × 941.60
  4. Step 4: Simplify right side
    1,531.28x = 1,989,676.13
  5. Step 5: Solve for x
    x = 1,989,676.13/1,531.28
  6. Step 6: Final answer
    x = 1,299.35

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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.