Home / 1,870.16-2,578.95-1,207.35

Finding the Fourth Proportional to 1,870.16, 2,578.95 and 1,207.35

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Solution

The fourth proportional to 1,870.16, 2,578.95 and 1,207.35 is: 1,664.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,870.16 : 2,578.95 = 1,207.35 : x
  2. Step 2: Convert to fraction form
    1,870.16/2,578.95 = 1,207.35/x
  3. Step 3: Cross multiply
    1,870.16x = 2,578.95 × 1,207.35
  4. Step 4: Simplify right side
    1,870.16x = 3,113,695.28
  5. Step 5: Solve for x
    x = 3,113,695.28/1,870.16
  6. Step 6: Final answer
    x = 1,664.94

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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.