Home / 1,458.24-2,012.28-860.70

Finding the Fourth Proportional to 1,458.24, 2,012.28 and 860.70

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Solution

The fourth proportional to 1,458.24, 2,012.28 and 860.70 is: 1,187.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,458.24 : 2,012.28 = 860.70 : x
  2. Step 2: Convert to fraction form
    1,458.24/2,012.28 = 860.70/x
  3. Step 3: Cross multiply
    1,458.24x = 2,012.28 × 860.70
  4. Step 4: Simplify right side
    1,458.24x = 1,731,973.71
  5. Step 5: Solve for x
    x = 1,731,973.71/1,458.24
  6. Step 6: Final answer
    x = 1,187.71

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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.