Home / 1,878.30-2,590.08-1,613.63

Finding the Fourth Proportional to 1,878.30, 2,590.08 and 1,613.63

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Solution

The fourth proportional to 1,878.30, 2,590.08 and 1,613.63 is: 2,225.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,878.30 : 2,590.08 = 1,613.63 : x
  2. Step 2: Convert to fraction form
    1,878.30/2,590.08 = 1,613.63/x
  3. Step 3: Cross multiply
    1,878.30x = 2,590.08 × 1,613.63
  4. Step 4: Simplify right side
    1,878.30x = 4,179,430.79
  5. Step 5: Solve for x
    x = 4,179,430.79/1,878.30
  6. Step 6: Final answer
    x = 2,225.11

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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.