Home / 8,373.78-12,559.19-3,111.35

Finding the Fourth Proportional to 8,373.78, 12,559.19 and 3,111.35

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Solution

The fourth proportional to 8,373.78, 12,559.19 and 3,111.35 is: 4,666.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,373.78 : 12,559.19 = 3,111.35 : x
  2. Step 2: Convert to fraction form
    8,373.78/12,559.19 = 3,111.35/x
  3. Step 3: Cross multiply
    8,373.78x = 12,559.19 × 3,111.35
  4. Step 4: Simplify right side
    8,373.78x = 39,075,957.45
  5. Step 5: Solve for x
    x = 39,075,957.45/8,373.78
  6. Step 6: Final answer
    x = 4,666.47

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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.