Home / 1,840.95-2,538.77-1,420.63

Finding the Fourth Proportional to 1,840.95, 2,538.77 and 1,420.63

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Solution

The fourth proportional to 1,840.95, 2,538.77 and 1,420.63 is: 1,959.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,840.95 : 2,538.77 = 1,420.63 : x
  2. Step 2: Convert to fraction form
    1,840.95/2,538.77 = 1,420.63/x
  3. Step 3: Cross multiply
    1,840.95x = 2,538.77 × 1,420.63
  4. Step 4: Simplify right side
    1,840.95x = 3,606,639.38
  5. Step 5: Solve for x
    x = 3,606,639.38/1,840.95
  6. Step 6: Final answer
    x = 1,959.12

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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.