Home / 1,851.09-2,555.72-1,430.70

Finding the Fourth Proportional to 1,851.09, 2,555.72 and 1,430.70

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Solution

The fourth proportional to 1,851.09, 2,555.72 and 1,430.70 is: 1,975.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,851.09 : 2,555.72 = 1,430.70 : x
  2. Step 2: Convert to fraction form
    1,851.09/2,555.72 = 1,430.70/x
  3. Step 3: Cross multiply
    1,851.09x = 2,555.72 × 1,430.70
  4. Step 4: Simplify right side
    1,851.09x = 3,656,468.60
  5. Step 5: Solve for x
    x = 3,656,468.60/1,851.09
  6. Step 6: Final answer
    x = 1,975.31

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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.