Home / 2,154.24-2,973.15-1,315.26

Finding the Fourth Proportional to 2,154.24, 2,973.15 and 1,315.26

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Solution

The fourth proportional to 2,154.24, 2,973.15 and 1,315.26 is: 1,815.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154.24 : 2,973.15 = 1,315.26 : x
  2. Step 2: Convert to fraction form
    2,154.24/2,973.15 = 1,315.26/x
  3. Step 3: Cross multiply
    2,154.24x = 2,973.15 × 1,315.26
  4. Step 4: Simplify right side
    2,154.24x = 3,910,465.27
  5. Step 5: Solve for x
    x = 3,910,465.27/2,154.24
  6. Step 6: Final answer
    x = 1,815.24

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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.