Home / 1,878.08-2,591.57-1,038.76

Finding the Fourth Proportional to 1,878.08, 2,591.57 and 1,038.76

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Solution

The fourth proportional to 1,878.08, 2,591.57 and 1,038.76 is: 1,433.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,878.08 : 2,591.57 = 1,038.76 : x
  2. Step 2: Convert to fraction form
    1,878.08/2,591.57 = 1,038.76/x
  3. Step 3: Cross multiply
    1,878.08x = 2,591.57 × 1,038.76
  4. Step 4: Simplify right side
    1,878.08x = 2,692,024.07
  5. Step 5: Solve for x
    x = 2,692,024.07/1,878.08
  6. Step 6: Final answer
    x = 1,433.39

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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.