Home / 1,534.14-2,117.04-870.91

Finding the Fourth Proportional to 1,534.14, 2,117.04 and 870.91

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Solution

The fourth proportional to 1,534.14, 2,117.04 and 870.91 is: 1,201.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,534.14 : 2,117.04 = 870.91 : x
  2. Step 2: Convert to fraction form
    1,534.14/2,117.04 = 870.91/x
  3. Step 3: Cross multiply
    1,534.14x = 2,117.04 × 870.91
  4. Step 4: Simplify right side
    1,534.14x = 1,843,742.90
  5. Step 5: Solve for x
    x = 1,843,742.90/1,534.14
  6. Step 6: Final answer
    x = 1,201.81

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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.