Home / 2,113.09-2,915.99-1,181.53

Finding the Fourth Proportional to 2,113.09, 2,915.99 and 1,181.53

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Solution

The fourth proportional to 2,113.09, 2,915.99 and 1,181.53 is: 1,630.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,113.09 : 2,915.99 = 1,181.53 : x
  2. Step 2: Convert to fraction form
    2,113.09/2,915.99 = 1,181.53/x
  3. Step 3: Cross multiply
    2,113.09x = 2,915.99 × 1,181.53
  4. Step 4: Simplify right side
    2,113.09x = 3,445,323.76
  5. Step 5: Solve for x
    x = 3,445,323.76/2,113.09
  6. Step 6: Final answer
    x = 1,630.47

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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.