Home / 1,538.24-2,123.65-1,015.19

Finding the Fourth Proportional to 1,538.24, 2,123.65 and 1,015.19

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Solution

The fourth proportional to 1,538.24, 2,123.65 and 1,015.19 is: 1,401.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,538.24 : 2,123.65 = 1,015.19 : x
  2. Step 2: Convert to fraction form
    1,538.24/2,123.65 = 1,015.19/x
  3. Step 3: Cross multiply
    1,538.24x = 2,123.65 × 1,015.19
  4. Step 4: Simplify right side
    1,538.24x = 2,155,897.63
  5. Step 5: Solve for x
    x = 2,155,897.63/1,538.24
  6. Step 6: Final answer
    x = 1,401.54

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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.