Home / 8,918.23-12,303.08-5,775.43

Finding the Fourth Proportional to 8,918.23, 12,303.08 and 5,775.43

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Solution

The fourth proportional to 8,918.23, 12,303.08 and 5,775.43 is: 7,967.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,918.23 : 12,303.08 = 5,775.43 : x
  2. Step 2: Convert to fraction form
    8,918.23/12,303.08 = 5,775.43/x
  3. Step 3: Cross multiply
    8,918.23x = 12,303.08 × 5,775.43
  4. Step 4: Simplify right side
    8,918.23x = 71,055,548.45
  5. Step 5: Solve for x
    x = 71,055,548.45/8,918.23
  6. Step 6: Final answer
    x = 7,967.45

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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.