Home / 2,225.61-3,071.93-1,386.45

Finding the Fourth Proportional to 2,225.61, 3,071.93 and 1,386.45

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Solution

The fourth proportional to 2,225.61, 3,071.93 and 1,386.45 is: 1,913.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,225.61 : 3,071.93 = 1,386.45 : x
  2. Step 2: Convert to fraction form
    2,225.61/3,071.93 = 1,386.45/x
  3. Step 3: Cross multiply
    2,225.61x = 3,071.93 × 1,386.45
  4. Step 4: Simplify right side
    2,225.61x = 4,259,070.42
  5. Step 5: Solve for x
    x = 4,259,070.42/2,225.61
  6. Step 6: Final answer
    x = 1,913.66

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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.