Home / 5,590.11-8,385.13-1,430.11

Finding the Fourth Proportional to 5,590.11, 8,385.13 and 1,430.11

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Solution

The fourth proportional to 5,590.11, 8,385.13 and 1,430.11 is: 2,145.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,590.11 : 8,385.13 = 1,430.11 : x
  2. Step 2: Convert to fraction form
    5,590.11/8,385.13 = 1,430.11/x
  3. Step 3: Cross multiply
    5,590.11x = 8,385.13 × 1,430.11
  4. Step 4: Simplify right side
    5,590.11x = 11,991,658.26
  5. Step 5: Solve for x
    x = 11,991,658.26/5,590.11
  6. Step 6: Final answer
    x = 2,145.16

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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.