Home / 1,430.59-2,140.38-1,326.91

Finding the Fourth Proportional to 1,430.59, 2,140.38 and 1,326.91

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Solution

The fourth proportional to 1,430.59, 2,140.38 and 1,326.91 is: 1,985.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,430.59 : 2,140.38 = 1,326.91 : x
  2. Step 2: Convert to fraction form
    1,430.59/2,140.38 = 1,326.91/x
  3. Step 3: Cross multiply
    1,430.59x = 2,140.38 × 1,326.91
  4. Step 4: Simplify right side
    1,430.59x = 2,840,091.63
  5. Step 5: Solve for x
    x = 2,840,091.63/1,430.59
  6. Step 6: Final answer
    x = 1,985.26

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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.