Home / 3,210.42-4,430.37-1,865.55

Finding the Fourth Proportional to 3,210.42, 4,430.37 and 1,865.55

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Solution

The fourth proportional to 3,210.42, 4,430.37 and 1,865.55 is: 2,574.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,210.42 : 4,430.37 = 1,865.55 : x
  2. Step 2: Convert to fraction form
    3,210.42/4,430.37 = 1,865.55/x
  3. Step 3: Cross multiply
    3,210.42x = 4,430.37 × 1,865.55
  4. Step 4: Simplify right side
    3,210.42x = 8,265,076.75
  5. Step 5: Solve for x
    x = 8,265,076.75/3,210.42
  6. Step 6: Final answer
    x = 2,574.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.