Home / 9,721.28-13,417.26-5,742.20

Finding the Fourth Proportional to 9,721.28, 13,417.26 and 5,742.20

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Solution

The fourth proportional to 9,721.28, 13,417.26 and 5,742.20 is: 7,925.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,721.28 : 13,417.26 = 5,742.20 : x
  2. Step 2: Convert to fraction form
    9,721.28/13,417.26 = 5,742.20/x
  3. Step 3: Cross multiply
    9,721.28x = 13,417.26 × 5,742.20
  4. Step 4: Simplify right side
    9,721.28x = 77,044,590.37
  5. Step 5: Solve for x
    x = 77,044,590.37/9,721.28
  6. Step 6: Final answer
    x = 7,925.35

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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.