Home / 1,534.12-2,117.37-1,440.34

Finding the Fourth Proportional to 1,534.12, 2,117.37 and 1,440.34

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Solution

The fourth proportional to 1,534.12, 2,117.37 and 1,440.34 is: 1,987.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,534.12 : 2,117.37 = 1,440.34 : x
  2. Step 2: Convert to fraction form
    1,534.12/2,117.37 = 1,440.34/x
  3. Step 3: Cross multiply
    1,534.12x = 2,117.37 × 1,440.34
  4. Step 4: Simplify right side
    1,534.12x = 3,049,732.71
  5. Step 5: Solve for x
    x = 3,049,732.71/1,534.12
  6. Step 6: Final answer
    x = 1,987.94

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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.