Home / 8,320.40-12,482.36-3,126.32

Finding the Fourth Proportional to 8,320.40, 12,482.36 and 3,126.32

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Solution

The fourth proportional to 8,320.40, 12,482.36 and 3,126.32 is: 4,690.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320.40 : 12,482.36 = 3,126.32 : x
  2. Step 2: Convert to fraction form
    8,320.40/12,482.36 = 3,126.32/x
  3. Step 3: Cross multiply
    8,320.40x = 12,482.36 × 3,126.32
  4. Step 4: Simplify right side
    8,320.40x = 39,023,851.72
  5. Step 5: Solve for x
    x = 39,023,851.72/8,320.40
  6. Step 6: Final answer
    x = 4,690.14

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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.