Home / 7,827.72-10,802.40-4,291.20

Finding the Fourth Proportional to 7,827.72, 10,802.40 and 4,291.20

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Solution

The fourth proportional to 7,827.72, 10,802.40 and 4,291.20 is: 5,921.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,827.72 : 10,802.40 = 4,291.20 : x
  2. Step 2: Convert to fraction form
    7,827.72/10,802.40 = 4,291.20/x
  3. Step 3: Cross multiply
    7,827.72x = 10,802.40 × 4,291.20
  4. Step 4: Simplify right side
    7,827.72x = 46,355,258.88
  5. Step 5: Solve for x
    x = 46,355,258.88/7,827.72
  6. Step 6: Final answer
    x = 5,921.94

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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.