Home / 4,200.30-6,300.45-1,430.10

Finding the Fourth Proportional to 4,200.30, 6,300.45 and 1,430.10

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Solution

The fourth proportional to 4,200.30, 6,300.45 and 1,430.10 is: 2,145.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,200.30 : 6,300.45 = 1,430.10 : x
  2. Step 2: Convert to fraction form
    4,200.30/6,300.45 = 1,430.10/x
  3. Step 3: Cross multiply
    4,200.30x = 6,300.45 × 1,430.10
  4. Step 4: Simplify right side
    4,200.30x = 9,010,273.55
  5. Step 5: Solve for x
    x = 9,010,273.55/4,200.30
  6. Step 6: Final answer
    x = 2,145.15

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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.