Home / 2,151.93-2,968.95-1,312.32

Finding the Fourth Proportional to 2,151.93, 2,968.95 and 1,312.32

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Solution

The fourth proportional to 2,151.93, 2,968.95 and 1,312.32 is: 1,810.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151.93 : 2,968.95 = 1,312.32 : x
  2. Step 2: Convert to fraction form
    2,151.93/2,968.95 = 1,312.32/x
  3. Step 3: Cross multiply
    2,151.93x = 2,968.95 × 1,312.32
  4. Step 4: Simplify right side
    2,151.93x = 3,896,212.46
  5. Step 5: Solve for x
    x = 3,896,212.46/2,151.93
  6. Step 6: Final answer
    x = 1,810.57

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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.