Home / 5,875.12-8,106.48-3,988.20

Finding the Fourth Proportional to 5,875.12, 8,106.48 and 3,988.20

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Solution

The fourth proportional to 5,875.12, 8,106.48 and 3,988.20 is: 5,502.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,875.12 : 8,106.48 = 3,988.20 : x
  2. Step 2: Convert to fraction form
    5,875.12/8,106.48 = 3,988.20/x
  3. Step 3: Cross multiply
    5,875.12x = 8,106.48 × 3,988.20
  4. Step 4: Simplify right side
    5,875.12x = 32,330,263.54
  5. Step 5: Solve for x
    x = 32,330,263.54/5,875.12
  6. Step 6: Final answer
    x = 5,502.91

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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.