Home / 2,130.30-2,941.65-1,345.74

Finding the Fourth Proportional to 2,130.30, 2,941.65 and 1,345.74

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Solution

The fourth proportional to 2,130.30, 2,941.65 and 1,345.74 is: 1,858.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.30 : 2,941.65 = 1,345.74 : x
  2. Step 2: Convert to fraction form
    2,130.30/2,941.65 = 1,345.74/x
  3. Step 3: Cross multiply
    2,130.30x = 2,941.65 × 1,345.74
  4. Step 4: Simplify right side
    2,130.30x = 3,958,696.07
  5. Step 5: Solve for x
    x = 3,958,696.07/2,130.30
  6. Step 6: Final answer
    x = 1,858.28

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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.