Home / 1,558.08-2,150.15-859.46

Finding the Fourth Proportional to 1,558.08, 2,150.15 and 859.46

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Solution

The fourth proportional to 1,558.08, 2,150.15 and 859.46 is: 1,186.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,558.08 : 2,150.15 = 859.46 : x
  2. Step 2: Convert to fraction form
    1,558.08/2,150.15 = 859.46/x
  3. Step 3: Cross multiply
    1,558.08x = 2,150.15 × 859.46
  4. Step 4: Simplify right side
    1,558.08x = 1,847,952.87
  5. Step 5: Solve for x
    x = 1,847,952.87/1,558.08
  6. Step 6: Final answer
    x = 1,186.04

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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.