Home / 2,113.04-2,915.74-1,228.70

Finding the Fourth Proportional to 2,113.04, 2,915.74 and 1,228.70

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Solution

The fourth proportional to 2,113.04, 2,915.74 and 1,228.70 is: 1,695.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,113.04 : 2,915.74 = 1,228.70 : x
  2. Step 2: Convert to fraction form
    2,113.04/2,915.74 = 1,228.70/x
  3. Step 3: Cross multiply
    2,113.04x = 2,915.74 × 1,228.70
  4. Step 4: Simplify right side
    2,113.04x = 3,582,569.74
  5. Step 5: Solve for x
    x = 3,582,569.74/2,113.04
  6. Step 6: Final answer
    x = 1,695.46

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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.