Home / 1,485.66-2,050.46-1,420.05

Finding the Fourth Proportional to 1,485.66, 2,050.46 and 1,420.05

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Solution

The fourth proportional to 1,485.66, 2,050.46 and 1,420.05 is: 1,959.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.66 : 2,050.46 = 1,420.05 : x
  2. Step 2: Convert to fraction form
    1,485.66/2,050.46 = 1,420.05/x
  3. Step 3: Cross multiply
    1,485.66x = 2,050.46 × 1,420.05
  4. Step 4: Simplify right side
    1,485.66x = 2,911,755.72
  5. Step 5: Solve for x
    x = 2,911,755.72/1,485.66
  6. Step 6: Final answer
    x = 1,959.91

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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.