Home / 5,590.45-8,385.54-1,430.47

Finding the Fourth Proportional to 5,590.45, 8,385.54 and 1,430.47

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Solution

The fourth proportional to 5,590.45, 8,385.54 and 1,430.47 is: 2,145.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,590.45 : 8,385.54 = 1,430.47 : x
  2. Step 2: Convert to fraction form
    5,590.45/8,385.54 = 1,430.47/x
  3. Step 3: Cross multiply
    5,590.45x = 8,385.54 × 1,430.47
  4. Step 4: Simplify right side
    5,590.45x = 11,995,256.25
  5. Step 5: Solve for x
    x = 11,995,256.25/5,590.45
  6. Step 6: Final answer
    x = 2,145.67

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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.