Home / 1,985.98-2,740.44-1,146.70

Finding the Fourth Proportional to 1,985.98, 2,740.44 and 1,146.70

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Solution

The fourth proportional to 1,985.98, 2,740.44 and 1,146.70 is: 1,582.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985.98 : 2,740.44 = 1,146.70 : x
  2. Step 2: Convert to fraction form
    1,985.98/2,740.44 = 1,146.70/x
  3. Step 3: Cross multiply
    1,985.98x = 2,740.44 × 1,146.70
  4. Step 4: Simplify right side
    1,985.98x = 3,142,462.55
  5. Step 5: Solve for x
    x = 3,142,462.55/1,985.98
  6. Step 6: Final answer
    x = 1,582.32

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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.