Home / 1,348.60-1,857.18-1,113.40

Finding the Fourth Proportional to 1,348.60, 1,857.18 and 1,113.40

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Solution

The fourth proportional to 1,348.60, 1,857.18 and 1,113.40 is: 1,533.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,348.60 : 1,857.18 = 1,113.40 : x
  2. Step 2: Convert to fraction form
    1,348.60/1,857.18 = 1,113.40/x
  3. Step 3: Cross multiply
    1,348.60x = 1,857.18 × 1,113.40
  4. Step 4: Simplify right side
    1,348.60x = 2,067,784.21
  5. Step 5: Solve for x
    x = 2,067,784.21/1,348.60
  6. Step 6: Final answer
    x = 1,533.28

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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.