Home / 7,240.30-9,988.28-4,256.08

Finding the Fourth Proportional to 7,240.30, 9,988.28 and 4,256.08

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Solution

The fourth proportional to 7,240.30, 9,988.28 and 4,256.08 is: 5,871.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,240.30 : 9,988.28 = 4,256.08 : x
  2. Step 2: Convert to fraction form
    7,240.30/9,988.28 = 4,256.08/x
  3. Step 3: Cross multiply
    7,240.30x = 9,988.28 × 4,256.08
  4. Step 4: Simplify right side
    7,240.30x = 42,510,918.74
  5. Step 5: Solve for x
    x = 42,510,918.74/7,240.30
  6. Step 6: Final answer
    x = 5,871.43

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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.