Home / 4,312.48-6,469.04-1,390.40

Finding the Fourth Proportional to 4,312.48, 6,469.04 and 1,390.40

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Solution

The fourth proportional to 4,312.48, 6,469.04 and 1,390.40 is: 2,085.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,312.48 : 6,469.04 = 1,390.40 : x
  2. Step 2: Convert to fraction form
    4,312.48/6,469.04 = 1,390.40/x
  3. Step 3: Cross multiply
    4,312.48x = 6,469.04 × 1,390.40
  4. Step 4: Simplify right side
    4,312.48x = 8,994,553.22
  5. Step 5: Solve for x
    x = 8,994,553.22/4,312.48
  6. Step 6: Final answer
    x = 2,085.70

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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.