Home / 1,348.08-1,860.45-788.49

Finding the Fourth Proportional to 1,348.08, 1,860.45 and 788.49

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Solution

The fourth proportional to 1,348.08, 1,860.45 and 788.49 is: 1,088.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,348.08 : 1,860.45 = 788.49 : x
  2. Step 2: Convert to fraction form
    1,348.08/1,860.45 = 788.49/x
  3. Step 3: Cross multiply
    1,348.08x = 1,860.45 × 788.49
  4. Step 4: Simplify right side
    1,348.08x = 1,466,946.22
  5. Step 5: Solve for x
    x = 1,466,946.22/1,348.08
  6. Step 6: Final answer
    x = 1,088.17

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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.