Home / 4,209.58-6,312.21-1,287.10

Finding the Fourth Proportional to 4,209.58, 6,312.21 and 1,287.10

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Solution

The fourth proportional to 4,209.58, 6,312.21 and 1,287.10 is: 1,929.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,209.58 : 6,312.21 = 1,287.10 : x
  2. Step 2: Convert to fraction form
    4,209.58/6,312.21 = 1,287.10/x
  3. Step 3: Cross multiply
    4,209.58x = 6,312.21 × 1,287.10
  4. Step 4: Simplify right side
    4,209.58x = 8,124,445.49
  5. Step 5: Solve for x
    x = 8,124,445.49/4,209.58
  6. Step 6: Final answer
    x = 1,929.99

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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.