Home / 5,590.31-8,385.75-1,430.36

Finding the Fourth Proportional to 5,590.31, 8,385.75 and 1,430.36

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Solution

The fourth proportional to 5,590.31, 8,385.75 and 1,430.36 is: 2,145.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,590.31 : 8,385.75 = 1,430.36 : x
  2. Step 2: Convert to fraction form
    5,590.31/8,385.75 = 1,430.36/x
  3. Step 3: Cross multiply
    5,590.31x = 8,385.75 × 1,430.36
  4. Step 4: Simplify right side
    5,590.31x = 11,994,602.12
  5. Step 5: Solve for x
    x = 11,994,602.12/5,590.31
  6. Step 6: Final answer
    x = 2,145.61

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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.