Home / 8,385.20-12,587.40-4,924.40

Finding the Fourth Proportional to 8,385.20, 12,587.40 and 4,924.40

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Solution

The fourth proportional to 8,385.20, 12,587.40 and 4,924.40 is: 7,392.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,385.20 : 12,587.40 = 4,924.40 : x
  2. Step 2: Convert to fraction form
    8,385.20/12,587.40 = 4,924.40/x
  3. Step 3: Cross multiply
    8,385.20x = 12,587.40 × 4,924.40
  4. Step 4: Simplify right side
    8,385.20x = 61,985,392.56
  5. Step 5: Solve for x
    x = 61,985,392.56/8,385.20
  6. Step 6: Final answer
    x = 7,392.24

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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.