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Finding the Fourth Proportional to 7,031.77, 9,703.83 and 3,888.01

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Solution

The fourth proportional to 7,031.77, 9,703.83 and 3,888.01 is: 5,365.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,031.77 : 9,703.83 = 3,888.01 : x
  2. Step 2: Convert to fraction form
    7,031.77/9,703.83 = 3,888.01/x
  3. Step 3: Cross multiply
    7,031.77x = 9,703.83 × 3,888.01
  4. Step 4: Simplify right side
    7,031.77x = 37,728,588.08
  5. Step 5: Solve for x
    x = 37,728,588.08/7,031.77
  6. Step 6: Final answer
    x = 5,365.45

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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.