Home / 7,875.85-11,812.40-2,877.19

Finding the Fourth Proportional to 7,875.85, 11,812.40 and 2,877.19

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Solution

The fourth proportional to 7,875.85, 11,812.40 and 2,877.19 is: 4,315.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,875.85 : 11,812.40 = 2,877.19 : x
  2. Step 2: Convert to fraction form
    7,875.85/11,812.40 = 2,877.19/x
  3. Step 3: Cross multiply
    7,875.85x = 11,812.40 × 2,877.19
  4. Step 4: Simplify right side
    7,875.85x = 33,986,486.03
  5. Step 5: Solve for x
    x = 33,986,486.03/7,875.85
  6. Step 6: Final answer
    x = 4,315.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.